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.

Agent's Toolkit enters with a +1/+1 counter, a flying counter, a deathtouch counter, and a shield counter on it. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)

Whenever a creature you control enters, you may move a counter from Agent's Toolkit onto that creature.

, Sacrifice Agent's Toolkit: Draw a card.

Other Rogues you control get +1/+1.

Whenever one or more Rogues you control deal combat damage to a player, that player mills a card for each 1 damage dealt to them. If the player mills at least one creature card this way, you draw a card. (To mill a card, a player puts the top card of their library into their graveyard.)

Choose target creature. Whenever that creature is dealt damage this turn, it deals that much damage to each other creature and each player.

Flying

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

Pegasus creatures you control have lifelink.

Constellation — Whenever an enchantment you control enters, create a 2/2 white Pegasus creature token with flying.

, 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, 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

Trample

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

Whenever Bloated Contaminator deals combat damage to a player, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Whenever you're dealt damage, you may put that many +1/+1 counters on Blood Hound.

At the beginning of your end step, remove all +1/+1 counters from Blood Hound.

Toxic 2 (Players dealt combat damage by this creature also get two poison counters. A player with ten or more poison counters loses the game.)

When Bloodroot Apothecary enters, you and target opponent each create a Treasure token.

Whenever an opponent sacrifices a noncreature token, that player gets two poison counters.

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters with a +1/+1 counter on it.)

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)

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 you're dealt combat damage, the attacking player gains control of Contested Game Ball and untaps it.

, : Draw a card and put a point counter on Contested Game Ball. Then if it has five or more point counters on it, sacrifice it and create a Treasure token.

Whenever you're dealt damage, you may create that many 1/1 white Soldier creature tokens.

Deep-Slumber Titan enters tapped.

Deep-Slumber Titan doesn't untap during your untap step.

Whenever Deep-Slumber Titan is dealt damage, untap it.

Menace

Desmond Miles gets +1/+0 for each other Assassin you control and each Assassin card in your graveyard.

Whenever Desmond Miles deals combat damage to a player, surveil X, where X is the amount of damage it dealt to that player.

Soulbond (You may pair this creature with another unpaired creature when either enters. 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.)

Flying

Double strike (This creature deals both first-strike and regular combat damage.)

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

Whenever you gain life, draw a card.

Whenever Dromad Purebred is dealt damage, you gain 1 life.

Enchant creature

Enchanted creature has lifelink and "Whenever a creature an opponent controls dies, put a +1/+1 counter on this creature." (Damage dealt by a creature with lifelink also causes its controller to gain that much life.)

Menace

Assassin spells you cast have freerunning . (You may cast a spell for its freerunning cost if you dealt combat damage to a player this turn with an Assassin or commander.)

Whenever Ezio deals combat damage to a player, you may pay if that player has 10 or less life. When you do, that player loses the game.

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.

Whenever Frodo, Determined Hero enters or attacks, you may attach target Equipment you control with mana value 2 or 3 to Frodo.

During your turn, prevent all damage that would be dealt to Frodo.

Whenever Fungusaur is dealt damage, put a +1/+1 counter on it.

Ghired's Belligerence deals X damage divided as you choose among any number of target creatures. Whenever a creature dealt damage this way dies this turn, populate. (Create a token that's a copy of a creature token you control.)

Whenever you attack with two or more non-Gideon creatures, put a +1/+1 counter on each of those creatures.

+2: Until end of turn, Gideon, the Oathsworn becomes a 5/5 white Soldier creature that's still a planeswalker. Prevent all damage that would be dealt to him this turn. (He can't attack if he was cast this turn.)

−9: Exile Gideon, the Oathsworn and each creature your opponents control.

Choose target Wall creature. Whenever that creature is dealt damage by an attacking creature this turn, you gain that much life.

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

Whenever Goblin Piledriver attacks, it gets +2/+0 until end of turn for each other attacking Goblin.

More Than Meets the Eye (You may cast this card converted for .)

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

Whenever you cast your second spell each turn, convert Goldbug.

Enchant player

Enchanted player can't gain life.

Whenever enchanted player is dealt damage, they lose half their life, rounded up.

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 you control enters, 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 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 Ignoble Soldier becomes blocked, prevent all combat damage that would be dealt by it this turn.

Flash (You may cast this spell any time you could cast an instant.)

Whenever Illusory Ambusher is dealt damage, draw that many cards.

Bloodthirst X (This creature enters with X +1/+1 counters on it, where X is the damage dealt to your opponents this turn.)

Menace

Enrage — Whenever Indoraptor, the Perfect Hybrid is dealt damage, choose an opponent at random. Indoraptor deals damage equal to its power to that player unless they sacrifice a nontoken creature of their choice.

Whenever Innocent Bystander is dealt 3 or more damage, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Whenever Jagged Poppet is dealt damage, discard that many cards.

Hellbent — Whenever Jagged Poppet deals combat damage to a player, if you have no cards in hand, that player discards cards equal to the damage.

Flying

Whenever a creature an opponent controls is dealt damage, put a +1/+1 counter on Kazarov, Sengir Pureblood.

: Kazarov deals 2 damage to target creature.