The Squadron Sinister

hits creature — 2,298 cards in the game can cause this.

1. Jalira, Master Polymorphist — Jalira, Master Polymorphist can put The Squadron Sinister onto the battlefield from your library
2. Polymorph — Polymorph can put The Squadron Sinister onto the battlefield from your library
3. Birthing Ritual — Birthing Ritual can put The Squadron Sinister onto the battlefield from your library
4. Industrial Advancement — Industrial Advancement can put The Squadron Sinister onto the battlefield from your library
5. Killer Instinct — Killer Instinct can put The Squadron Sinister onto the battlefield from your library
6. Arthur, Marigold Knight — Arthur, Marigold Knight can put The Squadron Sinister onto the battlefield from your library
7. Proteus Staff — Proteus Staff can put The Squadron Sinister onto the battlefield from your library
8. Synthetic Destiny — Synthetic Destiny can put The Squadron Sinister onto the battlefield from your library
9. Divergent Transformations — Divergent Transformations can put The Squadron Sinister onto the battlefield from your library
10. Transmogrify — Transmogrify can put The Squadron Sinister onto the battlefield from your library
11. Mass Polymorph — Mass Polymorph can put The Squadron Sinister onto the battlefield from your library
12. Chaos Mutation — Chaos Mutation can put The Squadron Sinister onto the battlefield from your library
13. Lukka, Coppercoat Outcast — Lukka, Coppercoat Outcast can put The Squadron Sinister onto the battlefield from your library
14. Identity Echo — Identity Echo can put The Squadron Sinister onto the battlefield from your library

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

a Villain deals combat damage — 255 cards in the game can cause this (The Squadron Sinister is one).

When The Squadron Sinister deals combat damage:

1. Loki, the Deceiver — draws you 1 card
2. Stilt-Man, Towering Terror — triggers

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

a Villain enters the battlefield — 268 cards in the game can cause this (The Squadron Sinister is one).

When The Squadron Sinister enters:

1. Flying Octobot — puts a +1/+1 counter on itself
2. Doom Reigns Supreme — makes each opponent lose 1 life
3. Crossbones, Malicious Mercenary — puts a +1/+1 counter on itself
4. Yellowjacket, Heartless Marauder — gets +1/+0
5. Swordsman, Sharp Scoundrel — triggers
6. Prowler, Clawed Thief — draws and discards
7. Baron Strucker, HYDRA Overlord — draws and discards

a Human enters the battlefield — 4,639 cards in the game can cause this (The Squadron Sinister is one).

When The Squadron Sinister enters:

1. General Kudro of Drannith — hits a graveyard
2. Heronblade Elite — puts a +1/+1 counter on itself
3. Kyler, Sigardian Emissary — puts a +1/+1 counter on itself
4. Thalia's Lieutenant — puts a +1/+1 counter on itself
5. Champion of the Parish — puts a +1/+1 counter on itself
6. Captain of the Mists — untaps itself
7. Erkenbrand, Lord of Westfold — gives +1/+0
8. Beregond of the Guard — gives +1/+1
9. Théoden, King of Rohan — grants double strike
10. Lossarnach Captain — taps a creature an opponent controls

2 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 (The Squadron Sinister is one).

When The Squadron Sinister 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

131 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 (The Squadron Sinister is one).

When The Squadron Sinister 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. Saw — sacrifices a creature
7. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
8. Ultima Weapon — kills a creature an opponent controls
9. Path of Mettle // Metzali, Tower of Triumph — triggers

185 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 (The Squadron Sinister is one).

When The Squadron Sinister blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Tide of War — sacrifices a creature
3. Dead-Iron Sledge — kills a creature

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

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

When The Squadron Sinister enters:

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

322 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 (The Squadron Sinister is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When The Squadron Sinister enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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