Spawnsire of Ulamog

an Eldrazi spell is cast — 1 card in the game can cause this (Spawnsire of Ulamog is one).

1. Ulalek, Fused Atrocity — When Spawnsire of Ulamog is cast, Ulalek, Fused Atrocity copies a spell

hits creature — 2,298 cards in the game can cause this (Spawnsire of Ulamog is one).

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

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

a spell is cast — 155 cards in the game can cause this (Spawnsire of Ulamog is one).

When Spawnsire of Ulamog is cast:

1. Glaring Fleshraker — makes a token
2. The Kingpin of Crime — drains each opponent
3. Leader's Talent — puts a counter on a creature
4. Nita, Forum Conciliator — puts a counter on a creature
5. Treasury Thrull — drains each opponent
6. Life Insurance — drains each opponent
7. Sorin of House Markov // Sorin, Ravenous Neonate — drains each opponent
8. Syndicate Heavy — drains each opponent
9. Norin the Wary — flickers itself
10. Desecration Elemental — makes a player sacrifice a creature

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

an Eldrazi creature is cast — 226 cards in the game can cause this (Spawnsire of Ulamog is one).

When Spawnsire of Ulamog is cast:

1. Emrakul's Influence — draws you 2 cards
2. Kozilek's Return — exiles a card from a graveyard

an Eldrazi creature it makes cheaper to cast — 273 cards in the game can cause this.

1. Eye of Ugin — Eye of Ugin reduces what Spawnsire of Ulamog costs

272 other cards cause it too. These are the ones with the most connections.

a creature token enters the battlefield — 2,799 cards in the game can cause this (Spawnsire of Ulamog is one).

When an Eldrazi or Spawn enters thanks to Spawnsire of Ulamog:

1. Securitron Squadron — puts a counter on a permanent
2. Anointer Priest — gains you 1 life
3. Nesting Dovehawk — puts a +1/+1 counter on itself

a creature token is created — 2,799 cards in the game can cause this (Spawnsire of Ulamog is one).

1. Staff of the Storyteller — When Spawnsire of Ulamog makes an Eldrazi or Spawn token, Staff of the Storyteller puts a story counter on itself

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

a token enters the battlefield — 3,710 cards in the game can cause this (Spawnsire of Ulamog is one).

When an Eldrazi or Spawn enters thanks to Spawnsire of Ulamog:

1. Baron Bertram Graywater — makes a token
2. Marneus Calgar — draws you 1 card
3. Belladonna Took — gains you 1 life
4. Kambal, Profiteering Mayor — makes each opponent lose 1 life
5. Lucy MacLean, Positively Armed — makes a token
6. Mister Fantastic, Reed Richards — draws you 1 card
7. Cloakwood Swarmkeeper — puts a +1/+1 counter on itself
8. Woodland Champion — puts that many +1/+1 counters on itself
9. Leonardo, the Balance — puts a counter on a creature
10. Spiritcall Enthusiast // Scrollboost — becomes prepared

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

a token is created — 3,711 cards in the game can cause this (Spawnsire of Ulamog is one).

When Spawnsire of Ulamog makes an Eldrazi or Spawn token:

1. Akim, the Soaring Wind — makes a token
2. Idol of Oblivion — draws you 1 card
3. Rosie Cotton of South Lane — puts a counter on a permanent
4. Mirkwood Bats — makes each opponent lose 1 life

17 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 (Spawnsire of Ulamog is one).

When Spawnsire of Ulamog attacks:

1. Far Fortune, End Boss — deals 1 damage
2. Temmet, Naktamun's Will — draws you 1 card
3. Invisible Woman — triggers
4. Caesar, Legion's Emperor — sacrifices a creature
5. Guide of Souls — triggers
6. Campsite Cuisine — sacrifices a Food
7. Gossip's Talent — triggers

126 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 (Spawnsire of Ulamog is one).

When Spawnsire of Ulamog attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Saw — sacrifices a creature

205 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 (Spawnsire of Ulamog is one).

1. Tide of War — When Spawnsire of Ulamog blocks, Tide of War sacrifices a creature

29 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 (Spawnsire of Ulamog is one).

1. Season of Growth — When an Eldrazi or Spawn enters thanks to Spawnsire of Ulamog, Season of Growth scries
2. Slash, Reptile Rampager — When an Eldrazi or Spawn enters thanks to Spawnsire of Ulamog, Slash, Reptile Rampager deals 2 damage
3. Ray Fillet, Wave Warrior — When Spawnsire of Ulamog enters, Ray Fillet, Wave Warrior puts a counter on itself
4. The Neutrinos — When an Eldrazi or Spawn enters thanks to Spawnsire of Ulamog, The Neutrinos gets +1/+0
5. Wingnut, Bat on the Belfry — When an Eldrazi or Spawn enters thanks to Spawnsire of Ulamog, Wingnut, Bat on the Belfry grants flying, haste and menace
6. Aetherstorm Roc — When an Eldrazi or Spawn enters thanks to Spawnsire of Ulamog, Aetherstorm Roc puts a counter on a permanent you control
7. Raphael, Most Attitude — When an Eldrazi or Spawn enters thanks to Spawnsire of Ulamog, Raphael, Most Attitude exiles a card from your library

346 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 (Spawnsire of Ulamog is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When an Eldrazi or Spawn enters thanks to Spawnsire of Ulamog, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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