{T}: Add {G}. Channel — {1}{G}, Discard this card: Destroy target artifact, enchantment, or nonbasic land an opponent controls. That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle. This ability costs {1} less to activate for each legendary creature you control.

{T}: Add {W}. Channel — {2}{W}, Discard this card: It deals 4 damage to target attacking or blocking creature. This ability costs {1} less to activate for each legendary creature you control.

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

({T}: Add {G}.)

({T}: Add {W} or {B}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {G} or {W}.) This land enters tapped. When this land enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

{T}, Pay 1 life, Sacrifice this land: Search your library for a Plains or Swamp card, put it onto the battlefield, then shuffle.

This land enters tapped. When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.) {T}: Add {W}.

({T}: Add {B} or {G}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {W}.)

You have no maximum hand size. {T}: Add {C}.

({T}: Add {W} or {B}.) This land enters tapped. When this land enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

({T}: Add {B}.)

{T}: Add {B}. Channel — {3}{B}, Discard this card: Mill three cards, then return a creature or planeswalker card from your graveyard to your hand. This ability costs {1} less to activate for each legendary creature you control.

({T}: Add {G} or {W}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

This land enters tapped. When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.) {T}: Add {B} or {G}.

This land enters tapped. When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.) {T}: Add {G} or {W}.

This land enters tapped. When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.) {T}: Add {W} or {B}.

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

This land enters tapped. {T}: Add {B}. {2}{B}{B}{B}, {T}, Exile this land: Mill four cards, then return a creature card from your graveyard to the battlefield. Activate only as a sorcery.

({T}: Add {B} or {G}.) This land enters tapped. When this land enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

{T}, Pay 1 life, Sacrifice this land: Search your library for a Swamp or Forest card, put it onto the battlefield, then shuffle.

{T}, Pay 1 life, Sacrifice this land: Search your library for a Forest or Plains card, put it onto the battlefield, then shuffle.

If you would gain life, you gain twice that much life instead. If you would draw a card except the first one you draw in each of your draw steps, draw two cards instead.

Whenever another permanent you control enters, each opponent mills a card.

{T}: Add one mana of any color in your commander's color identity.

As this artifact enters, choose artifact, creature, enchantment, instant, or sorcery. Spells you cast of the chosen type cost {1} less to cast.

{2}, {T}: You gain 5 life. Shuffle this artifact and your graveyard into their owner's library.

Return all artifact and enchantment cards from your graveyard to the battlefield.

Search your library for a card, put that card into your hand, then shuffle.

Return any number of permanent cards with different names from your graveyard to the battlefield.

History Teacher — Sagas you control have read ahead. (As a Saga enters, choose a chapter and start with that many lore counters. Skipped chapters don't trigger.) Doctor's companion (You can have two commanders if the other is the Doctor.)

Flying {T}: Add one mana of any color.

{T}: Add X mana of any one color, where X is the number of creature cards in your graveyard.

You may play an additional land on each of your turns. Lands you control are every basic land type in addition to their other types.

Constellation — Whenever this creature or another enchantment you control enters, draw a card.

Enchantment spells you cast cost {1} less to cast. Whenever you cast an enchantment spell, you gain 1 life.

Lifelink Enchantment spells you cast cost {1} less to cast.

Whenever you cast an enchantment spell, you may draw a card.

{T}, Mill a card: Add {C}. (To mill a card, put the top card of your library into your graveyard.)

When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. When this creature dies, you may draw a card.

Enchantment spells you cast cost {1} less to cast. Whenever an enchantment you control is put into a graveyard from the battlefield, put a +1/+1 counter on this creature.

Whenever you cast an enchantment spell, you gain 1 life and draw a card.

Companion — Each nonland card in your starting deck shares a card type. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} as a sorcery.) As Umori enters, choose a card type. Spells you cast of the chosen type cost {1} less to cast.

Whenever you cast an enchantment spell, you may draw a card.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Exile target creature an opponent controls with power 3 or greater. II — Create a 2/1 white Cat Warrior creature token, then put a vigilance counter on a creature you control. III — Target creature you control gains double strike until end of turn.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Destroy target nonland permanent an opponent controls. II — Search your library for a Forest card, put it onto the battlefield tapped, then shuffle. III — Creatures you control gain deathtouch until end of turn.

Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.) I — You may sacrifice a creature. If you do, each opponent discards a card. II — Return target creature card from your graveyard to your hand. III — Target opponent may sacrifice a nonland, nontoken permanent of their choice. If they don't, they lose 2 life and you draw a card.

Islands don't untap during their controllers' untap steps.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after VI.) I — Create a Treasure token. II, III, IV, V, VI — Create a token that's a copy of target non-Saga token you control.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Exile target permanent an opponent controls with mana value 3 or greater. II — Noncreature spells your opponents cast cost {2} more to cast until your next turn. III — Return target creature or planeswalker card from your graveyard to the battlefield. Put a +1/+1 counter or a loyalty counter on it.

You may play an additional land on each of your turns.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — You and target opponent each draw two cards. II — Exile target artifact an opponent controls. III — Each player chooses three nonland permanents they control. Destroy all other nonland permanents.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Destroy all lands. II, III — Each player returns two land cards from their graveyard to the battlefield.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after IV.) I, II, III — Create a 3/3 black Dalek artifact creature token with menace for each lore counter on Genesis of the Daleks. IV — Target opponent faces a villainous choice — Destroy all Dalek creatures and each of your opponents loses life equal to the total power of Daleks that died this turn, or destroy all non-Dalek creatures.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Mill three cards. You may put an Elf or Tyvar card from your graveyard onto the battlefield. II — Put a +1/+1 counter on each Elf you control. III — Whenever an Elf you control attacks this turn, target creature an opponent controls gets -1/-1 until end of turn.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — The Ring tempts you, then each player mills cards equal to your Ring-bearer's power. II — Destroy all nonlegendary creatures. III — Each opponent loses 1 life for each creature card in that player's graveyard.

At the beginning of each player's draw step, that player draws an additional card. Each player may play an additional land on each of their turns.

Creatures can't attack you or planeswalkers you control unless their controller pays {X} for each of those creatures, where X is the number of enchantments you control.

(As this Saga enters and after your draw step, add a lore counter.) I — Exile a permanent card from your graveyard. You gain life equal to its mana value. II — Put a number of +1/+1 counters on target creature you control equal to the mana value of the exiled card. III — Return this Saga and the exiled card to their owner's hand.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Each player mills three cards. II — Exile up to two target cards from graveyards. For each creature card exiled this way, you gain 1 life. III — Return target creature or land card from your graveyard to your hand.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Search your library for a card, exile it face down, then shuffle. II — Turn the exiled card face up. If it's a creature card, you lose life equal to its mana value. III — You may put the exiled card onto the battlefield if it's a creature card. If you don't put it onto the battlefield, put it into its owner's hand.

Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.) I — Target opponent reveals their hand. You choose a creature or planeswalker card from it. That player discards that card. II — Search your library for a card, put that card into your hand, then shuffle. You lose 3 life. III — Put target creature card from a graveyard onto the battlefield under your control.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — For each player, destroy up to one target creature that player controls. For each creature destroyed this way, its controller creates a 3/3 green Mutant creature token with deathtouch. II — Target nontoken creature becomes a 6/6 legendary Horror creature named Fenric and loses all abilities. III — Target Mutant fights another target creature named Fenric.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Each opponent sacrifices a creature or planeswalker of their choice. II — Each opponent discards a card. III — Put target creature or planeswalker card from a graveyard onto the battlefield under your control.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I, II — Mill two cards, then you may return a creature card from your graveyard to your hand. III — Return all land cards from your graveyard to the battlefield, then shuffle your graveyard into your library.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after II.) I — Destroy all creatures. II — Return target legendary creature card from your graveyard to the battlefield. Put your choice of a first strike, vigilance, or lifelink counter on it.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — You draw three cards and you lose 3 life. II — Mill three cards. III — Choose up to three target creature cards with total mana value 8 or less in your graveyard. Return each of them to the battlefield with a necrodermis counter on it. They're artifacts in addition to their other types.

Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.) I, II — Look at the top seven cards of your library. You may reveal a non-Saga permanent card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. III — Put up to two non-Saga permanent cards from your hand onto the battlefield.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I, II — Mill three cards. Then you may exile a creature or enchantment card from your graveyard. If you do, create a 2/2 black Zombie creature token. III — You gain X life and scry X, where X is the number of Zombies you control.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Each player gets three rad counters. II — Create X 2/2 black Zombie Mutant creature tokens, where X is the total number of rad counters among players. III — Put two +1/+1 counters on each creature you control that's a Zombie or Mutant.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I, II — Search your library for a legendary creature card, reveal it, put it into your hand, then shuffle. III — Creatures you control gain double strike until end of turn. The Ring tempts you.

Permanents you control gain hexproof and indestructible until end of turn.

Until your next turn, your life total can't change and you gain protection from everything. All permanents you control phase out. (While they're phased out, they're treated as though they don't exist. They phase in before you untap during your untap step.) Exile Teferi's Protection.