Horizon Chimera

life is gained — 2,076 cards in the game can cause this (Horizon Chimera is one).

When Horizon Chimera gains life:

1. Dina, Soul Steeper — makes each opponent lose 1 life
2. Marina Vendrell's Grimoire — draws you that many cards
3. South Wind Avatar — makes each opponent lose 1 life
4. Rodolf Duskbringer — grants indestructible
5. Fiendish Panda — puts a +1/+1 counter on itself
6. Veinwitch Coven — brings a card back
7. Cleric Class — puts a counter on a creature
8. Lich's Mastery — draws you that many cards
9. Wall of Limbs — puts a +1/+1 counter on itself
10. Ratchet, Field Medic // Ratchet, Rescue Racer — triggers

84 other cards care about it too. These are the ones with the most connections.

draw a card — 3,815 cards in the game can cause this.

1. Pollywog Prodigy — When Pollywog Prodigy makes a player draw a card, Horizon Chimera gains you 1 life
2. Master of Winds — When Master of Winds makes a player draw a card, Horizon Chimera gains you 1 life
3. Windrider Wizard — When Windrider Wizard makes a player draw a card, Horizon Chimera gains you 1 life
4. Defiler of Dreams — When Defiler of Dreams makes a player draw a card, Horizon Chimera gains you 1 life
5. Sage of the Falls — When Sage of the Falls makes a player draw a card, Horizon Chimera gains you 1 life
6. Vaultborn Tyrant — When Vaultborn Tyrant makes a player draw a card, Horizon Chimera gains you 1 life
7. Fathom Mage — When Fathom Mage makes a player draw a card, Horizon Chimera gains you 1 life
8. Legolas Greenleaf — When Legolas Greenleaf makes a player draw a card, Horizon Chimera gains you 1 life
9. Selvala, Heart of the Wilds — When Selvala, Heart of the Wilds makes a player draw a card, Horizon Chimera gains you 1 life
10. Garruk's Packleader — When Garruk's Packleader makes a player draw a card, Horizon Chimera gains you 1 life

3,805 other cards cause it too. These are the ones with the most connections.

anything attacks — 17,934 cards in the game can cause this (Horizon Chimera is one).

When Horizon Chimera attacks:

1. Far Fortune, End Boss — deals 1 damage
2. Temmet, Naktamun's Will — draws you 1 card
3. Grim Javelineer — gives +1/+0
4. Invisible Woman — triggers
5. Caesar, Legion's Emperor — sacrifices a creature
6. Guide of Souls — triggers
7. Campsite Cuisine — sacrifices a Food
8. Gossip's Talent — triggers
9. Banon, the Returners' Leader — draws and discards
10. Toph, Earthbending Master — puts a counter on a permanent

116 other cards care about it too. These are the ones with the most connections.

a creature attacks — 17,934 cards in the game can cause this (Horizon Chimera is one).

When Horizon Chimera attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Kindred Discovery — draws you 1 card
4. Invasion of New Capenna // Holy Frazzle-Cannon — puts counters on a permanent
5. Chorale of the Void — brings a card back
6. Anim Pakal, Thousandth Moon — puts a +1/+1 counter on itself
7. Saw — sacrifices a creature
8. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
9. Ultima Weapon — kills a creature an opponent controls
10. Total War — kills a creature

180 other cards care about it too. These are the ones with the most connections.

a creature blocks — 17,934 cards in the game can cause this (Horizon Chimera is one).

When Horizon Chimera blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Carnage Gladiator — makes a player lose 1 life
3. Barrow-Blade — strips abilities
4. Heat of Battle — deals 1 damage
5. Battle Strain — deals 1 damage
6. Favor of the Woods — gains you 3 life
7. Tide of War — sacrifices a creature
8. Dead-Iron Sledge — kills a creature
9. Dwindle — kills a creature
10. Shield of the Righteous — triggers

18 other cards care about it too. These are the ones with the most connections.

a nontoken creature attacks — 17,934 cards in the game can cause this (Horizon Chimera is one).

When Horizon Chimera attacks:

1. Mardu Ascendancy — makes a token
2. Basri Ket — makes a token
3. Militia's Pride — makes a token

a creature enters the battlefield — 19,800 cards in the game can cause this (Horizon Chimera is one).

When Horizon Chimera enters:

1. Slash, Reptile Rampager — deals 2 damage
2. Ray Fillet, Wave Warrior — puts a counter on itself
3. The Neutrinos — gets +1/+0
4. Wingnut, Bat on the Belfry — grants flying, haste and menace
5. Aetherstorm Roc — puts a counter on a permanent you control
6. Raphael, Most Attitude — exiles a card from your library

301 other cards care about it too. These are the ones with the most connections.

anything enters the battlefield — 26,499 cards in the game can cause this (Horizon Chimera is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Horizon Chimera enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

45 other cards care about it too. These are the ones with the most connections.