As long as Archelos, Lagoon Mystic is tapped, other permanents enter the battlefield tapped. As long as Archelos is untapped, other permanents enter the battlefield untapped.

Deathtouch, lifelink Other legendary creatures you control get +2/+2.

Commanders you control have menace and deathtouch. Partner (You can have two commanders if both have partner.)

Whenever an opponent casts a spell, Kaervek the Merciless deals damage equal to that spell's mana value to any target.

Whenever a commander you control deals combat damage to an opponent, it deals that much damage to each other opponent. Partner (You can have two commanders if both have partner.)

Rather than pay {2} for each previous time you've cast this spell from the command zone this game, pay 2 life that many times. Flying, lifelink Whenever a player casts a spell, they lose 2 life.

Draw three cards, then put two cards from your hand on top of your library in any order.

Whenever Etali, Primal Storm attacks, exile the top card of each player's library, then you may cast any number of spells from among those cards without paying their mana costs.

{2}{G}{U}: Draw a card. You may put a land card from your hand onto the battlefield.

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.) Look at the top X cards of your library. You may put any number of land and/or legendary permanent cards with mana value X or less from among them onto the battlefield. Put the rest into your graveyard.

Whenever a creature with power 4 or greater enters the battlefield under your control, draw a card. −1: Untap target permanent.

Coven — At the beginning of combat on your turn, put a +1/+1 counter on up to one target creature you control. Then if you control three or more creatures with different powers, draw a card.

Whenever another nontoken creature enters the battlefield under your control, investigate. {T}, Sacrifice X Clues: Target opponent reveals the top X cards of their library. You may put a nonland permanent card with mana value X or less from among them onto the battlefield under your control. That player puts the rest on the bottom of their library in a random order.

Flash When Niambi, Esteemed Speaker enters the battlefield, you may return another target creature you control to its owner's hand. If you do, you gain life equal to that creature's mana value. {1}{W}{U}, {T}, Discard a legendary card: Draw two cards.

Arcane Sanctum enters the battlefield tapped. {T}: Add {W}, {U}, or {B}.

({T}: Add {R} or {G}.) Cinder Glade enters the battlefield tapped unless you control two or more basic lands.

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

Crumbling Necropolis enters the battlefield tapped. {T}: Add {U}, {B}, or {R}.

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

{T}: Add one mana of any color that a land an opponent controls could produce.

({T}: Add {G}.)

Frontier Bivouac enters the battlefield tapped. {T}: Add {G}, {U}, or {R}.

({T}: Add {U}.)

Jungle Shrine enters the battlefield tapped. {T}: Add {R}, {G}, or {W}.

({T}: Add {R}.)

Mystic Monastery enters the battlefield tapped. {T}: Add {U}, {R}, or {W}.

Nomad Outpost enters the battlefield tapped. {T}: Add {R}, {W}, or {B}.

Opulent Palace enters the battlefield tapped. {T}: Add {B}, {G}, or {U}.

Path of Ancestry enters the battlefield tapped. {T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

({T}: Add {W}.)

When Rith's Grove enters the battlefield, sacrifice it unless you return a non-Lair land you control to its owner's hand. {T}: Add {R}, {G}, or {W}.

Sandsteppe Citadel enters the battlefield tapped. {T}: Add {W}, {B}, or {G}.

Seaside Citadel enters the battlefield tapped. {T}: Add {G}, {W}, or {U}.

{T}: Add {C}. {T}: Add {U} or {R}. Shivan Reef deals 1 damage to you.

{1}, {T}: Add {G}{W}.

({T}: Add {B}.)

+1: Up to one target creature gets +3/+3 and gains trample until end of turn. −2: Create a 3/3 green Beast creature token. Then if an opponent controls more creatures than you, put a loyalty counter on Garruk, Unleashed. −7: You get an emblem with "At the beginning of your end step, you may search your library for a creature card, put it onto the battlefield, then shuffle."

+1: Tap target permanent, then untap another target permanent. −2: Ral Zarek deals 3 damage to any target. −7: Flip five coins. Take an extra turn after this one for each coin that comes up heads.

As long as it's your turn, commanders you control have indestructible. (Effects that say "destroy" don't destroy them. A creature with indestructible can't be destroyed by damage.) Partner (You can have two commanders if both have partner.)

Flying Spells your opponents cast that target one or more commanders you control cost {3} more to cast. Partner (You can have two commanders if both have partner.)

Flying At the beginning of combat on your turn, if you have a full party, choose target nonland permanent an opponent controls. Until your next turn, it can't attack or block, and its activated abilities can't be activated. Sacrifice Linvala: Choose hexproof or indestructible. Creatures you control gain that ability until end of turn.

Equipped creature gets +0/+2 and has hexproof and "Whenever a creature with deathtouch blocks or becomes blocked by this creature, destroy that creature." Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Counter target noncreature spell.

At the beginning of your end step, for each player, put a +1/+1 counter on up to one target creature that player controls. Each creature with one or more counters on it can't attack you or planeswalkers you control unless its controller pays {X}, where X is the number of counters on that creature.

Flying You and Humans you control have hexproof. {2}, Exile a card from your graveyard: Create a 1/1 white Human Soldier creature token.

{1}, {T}: Add {W}{U}.

{T}: Add one mana of any color in your commander's color identity. Sacrifice Commander's Sphere: Draw a card.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

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

Firemind Vessel enters the battlefield tapped. {T}: Add two mana of different colors.

Each creature you control with a +1/+1 counter on it has "{T}: Add one mana of any color." −1: Put a +1/+1 counter on target creature.

{T}: Add one mana of any color. {2}, {T}, Sacrifice Letter of Acceptance: Draw a card.

When Mana Geode enters the battlefield, scry 1. {T}: Add one mana of any color.

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

{T}: Add {C}. {1}, {T}: Add one mana of any color.

When Rishkar, Peema Renegade enters the battlefield, put a +1/+1 counter on each of up to two target creatures. Each creature you control with a counter on it has "{T}: Add {G}."

{T}: Add one mana of any color. {T}: Target creature becomes the color or colors of your choice until end of turn.

{3}, {T}: Create a colorless snow artifact token named Icy Manalith with "{T}: Add one mana of any color." {6}{R}{G}, {T}: Look at the top four cards of your library. You may cast a spell from among them without paying its mana cost. Put the rest on the bottom of your library in a random order.

Terrarion enters the battlefield tapped. {2}, {T}, Sacrifice Terrarion: Add two mana in any combination of colors. When Terrarion is put into a graveyard from the battlefield, draw a card.

Put up to three target creature cards from your graveyard on top of your library.

Flying Other multicolored creatures you control get +1/+0. Whenever another multicolored creature you control dies, return it to its owner's hand at the beginning of the next end step.

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Choose target artifact or enchantment. Its owner shuffles it into their library.

Exile target permanent with mana value 4 or greater.

Menace When Massacre Girl enters the battlefield, each other creature gets -1/-1 until end of turn. Whenever a creature dies this turn, each creature other than Massacre Girl gets -1/-1 until end of turn.

Flying, lifelink At the beginning of your upkeep, sacrifice Piru, the Volatile unless you pay {R}{W}{B}. When Piru dies, it deals 7 damage to each nonlegendary creature.

Choose two target creatures controlled by different players. Return those creatures to their owners' hands.

Vigilance, protection from creatures Whenever a creature deals combat damage to you, destroy that creature. Create a 1/1 white and black Spirit creature token with flying.

Prevent all noncombat damage that would be dealt to you and other permanents you control. −2: Exile target creature with power 4 or greater.

Tap all creatures your opponents control. Creatures you control gain lifelink until end of turn.

When Kardur, Doomscourge enters the battlefield, until your next turn, creatures your opponents control attack each combat if able and attack a player other than you if able. Whenever an attacking creature dies, each opponent loses 1 life and you gain 1 life.

At the beginning of each combat, creatures you control gain first strike until end of turn if a creature you control has first strike. The same is true for flying, deathtouch, double strike, haste, hexproof, indestructible, lifelink, menace, reach, skulk, trample, and vigilance.