Cloakwood Swarmkeeper

an Elf attacks — 723 cards in the game can cause this (Cloakwood Swarmkeeper is one).

When Cloakwood Swarmkeeper attacks:

1. Celeborn the Wise — scries
2. Tyvar the Bellicose — grants deathtouch
3. Harald Unites the Elves — shrinks a creature by -1/-1
4. Arboreal Alliance — triggers

a nontoken Elf enters the battlefield — 728 cards in the game can cause this (Cloakwood Swarmkeeper is one).

1. Wirewood Hivemaster — When Cloakwood Swarmkeeper enters, Wirewood Hivemaster makes a token

an Elf enters the battlefield — 752 cards in the game can cause this (Cloakwood Swarmkeeper is one).

When Cloakwood Swarmkeeper enters:

1. Wolverine Riders — gains you its toughness life
2. Elvish Warmaster — makes a token
3. Elvish Vanguard — puts a +1/+1 counter on itself
4. Marwyn, the Nurturer — puts a +1/+1 counter on itself
5. Woodland Weavemaster — gets +1/+1
6. High Perfect Morcant — puts a counter on a permanent an opponent controls
7. Maralen, Fae Ascendant — exiles a card from an opponent's library

1 other card cares about it too. These are the ones with the most connections.

a creature gets a counter — 2,691 cards in the game can cause this (Cloakwood Swarmkeeper is one).

When Cloakwood Swarmkeeper gets a counter:

1. Hollowmurk Siege — draws you 1 card
2. Ant-Man, Colony Commander — makes a token
3. Earth Kingdom General — gains you that much life
4. Casey Jones, Back Alley Brute — deals that much damage
5. Generous Patron — draws you 1 card
6. Shalai and Hallar — deals that much damage
7. Danny Pink — draws you 1 card
8. Enduring Scalelord — puts a +1/+1 counter on itself
9. Bold Plagiarist — puts counters on a permanent
10. Mikey & Leo, Chaos & Order — draws you 1 card

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

put a token onto the battlefield — 3,710 cards in the game can cause this.

1. Primeval Bounty — When a Beast enters thanks to Primeval Bounty, Cloakwood Swarmkeeper puts a +1/+1 counter on itself
2. Sword of Wealth and Power — When a Treasure enters thanks to Sword of Wealth and Power, Cloakwood Swarmkeeper puts a +1/+1 counter on itself
3. Glaring Fleshraker — When an Eldrazi or Spawn enters thanks to Glaring Fleshraker, Cloakwood Swarmkeeper puts a +1/+1 counter on itself
4. Dual Nature — When a creature enters thanks to Dual Nature, Cloakwood Swarmkeeper puts a +1/+1 counter on itself
5. Monkey Cage — When a Monkey enters thanks to Monkey Cage, Cloakwood Swarmkeeper puts a +1/+1 counter on itself
6. Scurry Oak — When a Squirrel enters thanks to Scurry Oak, Cloakwood Swarmkeeper puts a +1/+1 counter on itself
7. Gala Greeters — When a Treasure enters thanks to Gala Greeters, Cloakwood Swarmkeeper puts a +1/+1 counter on itself
8. Vaultborn Tyrant — When an artifact enters thanks to Vaultborn Tyrant, Cloakwood Swarmkeeper puts a +1/+1 counter on itself
9. Prosperous Innkeeper — When a Treasure enters thanks to Prosperous Innkeeper, Cloakwood Swarmkeeper puts a +1/+1 counter on itself
10. Watchful Radstag — When a permanent enters thanks to Watchful Radstag, Cloakwood Swarmkeeper puts a +1/+1 counter on itself

3,700 other cards cause it too. These are the ones with the most connections.

anything gets a counter — 4,415 cards in the game can cause this (Cloakwood Swarmkeeper is one).

1. All Will Be One — When Cloakwood Swarmkeeper gets a counter, All Will Be One deals that much damage

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

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

When Cloakwood Swarmkeeper 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

117 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 (Cloakwood Swarmkeeper is one).

When Cloakwood Swarmkeeper 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 (Cloakwood Swarmkeeper is one).

When Cloakwood Swarmkeeper blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Carnage Gladiator — makes a player lose 1 life
3. Tide of War — sacrifices a creature
4. Dead-Iron Sledge — kills a creature
5. Dwindle — kills a creature
6. Shield of the Righteous — triggers

22 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 (Cloakwood Swarmkeeper is one).

When Cloakwood Swarmkeeper 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 (Cloakwood Swarmkeeper is one).

When Cloakwood Swarmkeeper enters:

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

302 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 (Cloakwood Swarmkeeper is one).

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

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