Baron Sengir

hits creature — 2,298 cards in the game can cause this (Baron Sengir is one).

1. Jalira, Master Polymorphist — Jalira, Master Polymorphist can put Baron Sengir onto the battlefield from your library
2. Polymorph — Polymorph can put Baron Sengir onto the battlefield from your library
3. Birthing Ritual — Birthing Ritual can put Baron Sengir onto the battlefield from your library
4. Industrial Advancement — Industrial Advancement can put Baron Sengir onto the battlefield from your library
5. Killer Instinct — Killer Instinct can put Baron Sengir onto the battlefield from your library
6. Arthur, Marigold Knight — Arthur, Marigold Knight can put Baron Sengir onto the battlefield from your library
7. Proteus Staff — Proteus Staff can put Baron Sengir onto the battlefield from your library
8. Synthetic Destiny — Synthetic Destiny can put Baron Sengir onto the battlefield from your library
9. Divergent Transformations — Divergent Transformations can put Baron Sengir onto the battlefield from your library
10. Transmogrify — Transmogrify can put Baron Sengir onto the battlefield from your library

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

a Vampire attacks — 484 cards in the game can cause this (Baron Sengir is one).

When Baron Sengir attacks:

1. Glass-Cast Heart — makes a token
2. Sanctum Seeker — makes each opponent lose 1 life

a nontoken Vampire attacks — 484 cards in the game can cause this (Baron Sengir is one).

1. Mavren Fein, Dusk Apostle — When Baron Sengir attacks, Mavren Fein, Dusk Apostle makes a token

a Vampire creature is cast — 484 cards in the game can cause this (Baron Sengir is one).

1. Bloodlord of Vaasgoth — When Baron Sengir is cast, Bloodlord of Vaasgoth grants bloodthirst

a Vampire deals combat damage — 484 cards in the game can cause this (Baron Sengir is one).

When Baron Sengir deals combat damage:

1. Rakish Heir — puts a counter on a permanent
2. Stensia Masquerade — puts a counter on a permanent

a Vampire enters the battlefield — 500 cards in the game can cause this (Baron Sengir is one).

When Baron Sengir enters:

1. Anje, Maid of Dishonor — makes a token
2. Forerunner of the Legion — gives +1/+1
3. Markov Enforcer — deals damage
4. Evelyn, the Covetous — exiles a card from a library

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

When Baron Sengir gets a counter:

1. Hollowmurk Siege — draws you 1 card
2. Wickersmith's Tools — puts a charge counter on itself
3. Hapatra, Vizier of Poisons — makes a token
4. Ant-Man, Colony Commander — makes a token
5. Flourishing Defenses — makes a token
6. Nest of Scarabs — makes that many tokens
7. Earth Kingdom General — gains you that much life
8. Obelisk Spider — makes each opponent lose 1 life
9. Auntie Ool, Cursewretch — draws you 1 card
10. Casey Jones, Back Alley Brute — deals that much damage

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

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

1. All Will Be One — When Baron Sengir 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 (Baron Sengir is one).

When Baron Sengir 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

113 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 (Baron Sengir is one).

When Baron Sengir 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

184 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 (Baron Sengir is one).

1. Tide of War — When Baron Sengir blocks, Tide of War sacrifices a creature

27 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 (Baron Sengir is one).

When Baron Sengir enters:

1. Scurry Oak — puts a counter on itself
2. Fathom Mage — puts a counter on itself
3. Lonis, Genetics Expert — puts a counter on itself
4. Slash, Reptile Rampager — deals 2 damage
5. Gimli of the Glittering Caves — puts counters on a permanent
6. Ray Fillet, Wave Warrior — puts a counter on itself
7. Legolas Greenleaf — puts a counter on a permanent
8. The Neutrinos — gets +1/+0
9. Aetherstorm Roc — puts a counter on a permanent you control
10. Raphael, Most Attitude — exiles a card from your library

304 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 (Baron Sengir is one).

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

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