Whenever a creature or planeswalker an opponent controls is dealt excess damage, if a Giant, Wizard, or spell you controlled dealt damage to it this turn, draw a card.

When Apex Altisaur enters the battlefield, it fights up to one target creature you don't control.

Enrage — Whenever Apex Altisaur is dealt damage, it fights up to one target creature you don't control.

Flying

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Whenever you gain life, put a +1/+1 counter on each creature you control.

, Sacrifice Aurora Eidolon: Prevent the next 3 damage that would be dealt to any target this turn.

Whenever you cast a multicolored spell, you may return Aurora Eidolon from your graveyard to your hand.

Indestructible

When Barbed Servitor enters the battlefield, suspect it. (It has menace and can't block.)

Whenever Barbed Servitor deals combat damage to a player, you draw a card and you lose 1 life.

Whenever Barbed Servitor is dealt damage, target opponent loses that much life.

Enrage — Whenever Bellowing Aegisaur is dealt damage, put a +1/+1 counter on each other creature you control.

Equipped creature gets +1/+0 for each opponent you have.

Whenever equipped creature is dealt damage, it deals that much damage to any target.

Equip

: Blood Cultist deals 1 damage to target creature.

Whenever a creature dealt damage by Blood Cultist this turn dies, put a +1/+1 counter on Blood Cultist.

Body of Knowledge's power and toughness are each equal to the number of cards in your hand.

You have no maximum hand size.

Whenever Body of Knowledge is dealt damage, draw that many cards.

Whenever Boros Reckoner is dealt damage, it deals that much damage to any target.

: Boros Reckoner gains first strike until end of turn.

Whenever Broodhatch Nantuko is dealt damage, you may create that many 1/1 green Insect creature tokens.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Whenever Cephalid Illusionist becomes the target of a spell or ability, mill three cards.

, : Prevent all combat damage that would be dealt to and dealt by target creature you control this turn.

This spell costs less to cast, where X is the total amount of noncombat damage dealt to your opponents this turn.

Trample

Whenever a source you control deals noncombat damage to an opponent, Chandra's Incinerator deals that much damage to target creature or planeswalker that player controls.

Flying

Whenever an opponent is dealt noncombat damage, Chandra's Spitfire gets +3/+0 until end of turn.

Whenever a creature is dealt damage, destroy it. It can't be regenerated.

Provoke (Whenever this creature attacks, you may have target creature defending player controls untap and block it if able.)

: Prevent all combat damage that would be dealt to and dealt by Deftblade Elite this turn.

Soulbond (You may pair this creature with another unpaired creature when either enters the battlefield. They remain paired for as long as you control both of them.)

Whenever Donna or a creature it's paired with is dealt damage, Donna deals that much damage to target opponent.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.)

Other Spirits you control have melee.

Prevent all noncombat damage that would be dealt to Spirits you control.

Enchant creature

Whenever enchanted creature is dealt damage, its controller creates that many 1/1 green Squirrel creature tokens.

Whenever a creature is dealt damage, its controller may exile that many cards from the top of their library. They may play those cards until the end of their next turn.

Whenever you attack, put a shield counter on target attacking creature. Until end of turn, it gains "Whenever this creature deals combat damage to a player, remove a shield counter from it. If you do, draw a card." (If a creature with a shield counter on it would be dealt damage or destroyed, remove a shield counter from it instead.)

Haste

Feldon, Ronom Excavator can't block.

Whenever Feldon is dealt damage, exile that many cards from the top of your library. Choose one of them. Until the end of your next turn, you may play that card.

Whenever Filthy Cur is dealt damage, you lose that much life.

Defender, flying

Whenever Flumph is dealt damage, you and target opponent each draw a card.

All Sliver creatures have "Whenever this creature is dealt damage, put a +1/+1 counter on it." (It must survive the damage to get the counter.)

Flying, haste

Whenever a creature dealt damage by Garza Zol, Plague Queen this turn dies, put a +1/+1 counter on Garza Zol.

Whenever Garza Zol deals combat damage to a player, you may draw a card.

Giant Shark can't attack unless defending player controls an Island.

Whenever Giant Shark blocks or becomes blocked by a creature that has been dealt damage this turn, Giant Shark gets +2/+0 and gains trample until end of turn.

When you control no Islands, sacrifice Giant Shark.

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

: Destroy target creature that dealt damage to you this turn.

This spell costs less to cast for each opponent who was dealt damage this turn.

Menace

Myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token that's a copy of this creature that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Whenever Goblin Snowman blocks, prevent all combat damage that would be dealt to and dealt by it this turn.

: Goblin Snowman deals 1 damage to target creature it's blocking.

Flying

Poison Breath — When Green Dragon enters the battlefield, until end of turn, whenever a creature an opponent controls is dealt damage, destroy it.

Other creatures have "Whenever this creature attacks, you may have it fight Grothama, All-Devouring."

When Grothama leaves the battlefield, each player draws cards equal to the amount of damage dealt to Grothama this turn by sources they controlled.

Constellation — Whenever Harvestguard Alseids or another enchantment enters the battlefield under your control, prevent all damage that would be dealt to target creature this turn.

Flying

Other Zombies you control have flying.

Whenever one or more Zombies you control deal combat damage to one or more of your opponents, you may draw cards equal to the number of opponents dealt damage this way. If you do, discard that many cards.

Equipped creature can't be blocked.

Whenever equipped creature is dealt damage, destroy it.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Hungering Hydra enters the battlefield with X +1/+1 counters on it.

Hungering Hydra can't be blocked by more than one creature.

Whenever Hungering Hydra is dealt damage, put that many +1/+1 counters on it. (It must survive the damage to get the counters.)

Whenever Ill-Tempered Loner is dealt damage, it deals that much damage to any target.

: Ill-Tempered Loner gets +2/+0 until end of turn.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Enrage — Whenever Imperial Ceratops is dealt damage, you gain 2 life.

Equipped creature gets +2/+0.

Whenever equipped creature attacks, create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This creature can't block." (Players dealt combat damage by it also get a poison counter.)

Equip

Whenever Jackal Pup is dealt damage, it deals that much damage to you.

Flying

Whenever Kami of the Honored Dead is dealt damage, you gain that much life.

Soulshift 6 (When this creature dies, you may return target Spirit card with mana value 6 or less from your graveyard to your hand.)

Flying

Whenever another nontoken creature you control dies, you may pay 2 life and exile it. If you do, create a token that's a copy of that creature, except it's 1/1 and has toxic 1. (Players dealt combat damage by it also get a poison counter.)

Protection from white (This creature can't be blocked, targeted, dealt damage, or enchanted by anything white.)

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

As Lich enters the battlefield, you lose life equal to your life total.

You don't lose the game for having 0 or less life.

If you would gain life, draw that many cards instead.

Whenever you're dealt damage, sacrifice that many nontoken permanents. If you can't, you lose the game.

When Lich is put into a graveyard from the battlefield, you lose the game.

Prevent all combat damage that would be dealt to attacking artifact creatures you control.

Whenever one or more artifact creatures enter the battlefield under your control, draw a card. This ability triggers only once each turn.

Flying

Whenever one or more Pirates you control deal damage to your opponents, you create a Treasure token for each opponent dealt damage. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Partner (You can have two commanders if both have partner.)

Whenever Markov Enforcer or another Vampire enters the battlefield under your control, Markov Enforcer fights up to one target creature an opponent controls.

Whenever a creature dealt damage by Markov Enforcer this turn dies, create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

Living metal (As long as it's your turn, this Vehicle is also a creature.)

Whenever Megatron attacks, you may sacrifice another artifact. When you do, Megatron deals damage equal to the sacrificed artifact's mana value to target creature. If excess damage would be dealt to that creature this way, instead that damage is dealt to that creature's controller and you convert Megatron.

Whenever Mogg Maniac is dealt damage, it deals that much damage to target opponent or planeswalker.

Toxic 2 (Players dealt combat damage by this creature also get two poison counters.)

Whenever a creature you control with toxic deals combat damage to a player, that player gets an additional poison counter.

: Target creature you control with toxic gains deathtouch until end of turn.