Whenever you cast a historic spell, investigate. This ability triggers only once each turn. (Artifacts, legendaries, and Sagas are historic. To investigate, create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") Doctor's companion (You can have two commanders if the other is the Doctor.)

Delayed Blast Fireball deals 2 damage to each opponent and each creature they control. If this spell was cast from exile, it deals 5 damage to each opponent and each creature they control instead. Foretell {4}{R}{R} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.

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

Whenever equipped creature attacks, look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Suspend 3—{0} (Rather than cast this card from your hand, pay {0} and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.) {T}, Sacrifice this artifact: Add three mana of any one color.

Suspend 3—{0} (Rather than cast this card from your hand, pay {0} and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.) {T}: Add one mana of any color.

{T}: Add {C}{C}.

Suspend 3—{1} (Rather than cast this card from your hand, pay {1} and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.) {T}: Add {C}{C}.

Whenever you cast a multicolored spell, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.") {X}{X}{X}, {T}: Look at the top X cards of your library. Put up to two of them into your hand and the rest on the bottom of your library in a random order.

The "legend rule" doesn't apply to tokens you control. Whenever another nontoken legendary permanent you control enters, you may pay {1}. If you do, create a token that's a copy of it. That token gains haste. Sacrifice it at the beginning of the next end step.

Whenever you attack, spells you cast from exile this turn cost {X} less to cast, where X is the number of players being attacked. Exile the top X cards of your library. Until end of turn, you may cast spells from among those exiled cards.

Detritivore's power and toughness are each equal to the number of nonbasic land cards in your opponents' graveyards. Suspend X—{X}{3}{R}. X can't be 0. (Rather than cast this card from your hand, you may pay {X}{3}{R} and exile it with X time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.) Whenever a time counter is removed from this card while it's exiled, destroy target nonbasic land.

As long as you have one or fewer cards in hand, Djeru and Hazoret has vigilance and haste. Whenever Djeru and Hazoret attacks, look at the top six cards of your library. You may exile a legendary creature card from among them. Put the rest on the bottom of your library in a random order. Until end of turn, you may cast the exiled card without paying its mana cost.

Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays {X}, where X is this creature's power.

White spells you cast cost {1} less to cast. Blue spells you cast cost {1} less to cast. Spells your opponents cast cost {1} more to cast.

{T}: Choose target permanent you control or suspended card you own. If that permanent or card has a time counter on it, you may remove a time counter from it or put another time counter on it.

Whenever you cast an artifact, instant, or sorcery spell, copy that spell. You may choose new targets for the copy. This ability triggers only once each turn. (A copy of a permanent spell becomes a token.) Whenever an opponent casts an artifact, instant, or sorcery spell, counter that spell. This ability triggers only once each turn.

When Malcator enters, create a 3/3 colorless Phyrexian Golem artifact creature token. At the beginning of your end step, if three or more artifacts entered the battlefield under your control this turn, create a 3/3 colorless Phyrexian Golem artifact creature token.

Flying Whenever you cast a spell from anywhere other than your hand, you may pay {1}{U/R}. If you do, copy that spell and you may choose new targets for the copy. If the copy is a permanent spell, it gains haste and "At the beginning of your end step, sacrifice this permanent." (A copy of a permanent spell becomes a token.)

When Oji enters, you gain 2 life and scry 2. Whenever you cast your second spell each turn, exile up to one target creature you control, then return it to the battlefield under its owner's control.

When Pia Nalaar enters, create a 1/1 colorless Thopter artifact creature token with flying. {1}{R}: Target artifact creature gets +1/+0 until end of turn. {1}, Sacrifice an artifact: Target creature can't block this turn.

Whenever Ragavan deals combat damage to a player, create a Treasure token and exile the top card of that player's library. Until end of turn, you may cast that card. Dash {1}{R} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Flying, haste If a spell would deal damage to you or another permanent you control, prevent that damage. If a spell would deal damage to an opponent or a permanent an opponent controls, it deals that much damage plus 1 instead.

Whenever one or more noncreature permanents are returned to hand, draw a card. This ability triggers only once each turn. {X}{W}, Return a land you control to its owner's hand: Return target artifact or enchantment card with mana value X or less from your graveyard to the battlefield. Activate only as a sorcery.

Artifact, instant, and sorcery spells you cast cost {1} less to cast. {7}: If you both own and control Urza, Lord Protector and an artifact named The Mightstone and Weakstone, exile them, then meld them into Urza, Planeswalker. Activate only as a sorcery.

Vigilance {T}: Add an amount of {C} equal to Vhal's toughness. This mana can't be spent to cast spells from your hand. Choose a Background (You can have a Background as a second commander.)

Whenever a non-Human creature you control attacks, look at the top six cards of your library. You may put a Human creature card from among them onto the battlefield tapped and attacking. It gains indestructible until end of turn. Put the rest of the cards on the bottom of your library in a random order.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I, II — For each player, exile up to one target non-Saga, nonland permanent that player controls until this Saga leaves the battlefield. III — Create Avacyn, a legendary 8/8 white Angel creature token with flying, vigilance, and indestructible.

(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.

Commander creatures you own have "Whenever you cast a spell from exile, this creature deals damage equal to that spell's mana value to target opponent."

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Gain control of up to one target artifact for as long as you control this Saga. The Ring tempts you. II — Tap up to two target creatures. Put a stun counter on each of them. III — Draw a card for each tapped creature target opponent controls.

Commander creatures you own have "Whenever this creature attacks a player, if no opponent has more life than that player, this creature can't be blocked this turn."

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Create two tapped Powerstone tokens. II — Choose two target players. Until your next turn, each creature they control attacks the other chosen player each combat if able. III — This Saga deals X damage to any target and X damage to any other target, where X is the number of artifacts you control.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Exile the top five cards of your library. For each nonland card exiled this way, put a number of time counters on that card equal to its mana value. If it doesn't have suspend, it gains suspend. II — Time travel, then time travel. III — For each opponent, destroy up to one target artifact that player controls.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Up to one target creature can't block for as long as you control this Saga. The Ring tempts you. II — Search your library for a Mountain card, put it onto the battlefield, then shuffle. III — Create Smaug, a legendary 6/6 red Dragon creature token with flying, haste, and "When Smaug dies, create fourteen Treasure tokens."

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 — Scry 4, then you may reveal the top card of your library. If a planeswalker card is revealed this way, put it into your hand. II — You may put a planeswalker card with mana value 6 or less from your hand onto the battlefield. III — You may activate the loyalty abilities of planeswalkers you control twice this turn rather than only once.

At the beginning of your upkeep, exile the top card of your library. You may play that card this turn. At the beginning of your end step, if you didn't play a card from exile this turn, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

Draw two cards. Exile Inspiring Refrain with three time counters on it. Suspend 3—{2}{U} (Rather than cast this card from your hand, you may pay {2}{U} and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)