Bloodline Keeper // Lord of Lineage

a creature transforms — 105 cards in the game can cause this (Bloodline Keeper is one).

When Bloodline Keeper // Lord of Lineage transforms:

1. Sygg, Wanderwine Wisdom // Sygg, Wanderbrine Shield — grants a keyword
2. Neglected Heirloom // Ashmouth Blade — triggers

2 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 (Bloodline Keeper is one).

When Bloodline Keeper // Lord of Lineage 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 (Bloodline Keeper is one).

1. Mavren Fein, Dusk Apostle — When Bloodline Keeper // Lord of Lineage attacks, Mavren Fein, Dusk Apostle makes a token

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

1. Bloodlord of Vaasgoth — When Bloodline Keeper // Lord of Lineage is cast, Bloodlord of Vaasgoth grants bloodthirst

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

When Bloodline Keeper // Lord of Lineage 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 (Bloodline Keeper is one).

When a Vampire enters thanks to Bloodline Keeper // Lord of Lineage:

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 token enters the battlefield — 2,799 cards in the game can cause this (Bloodline Keeper is one).

When a Vampire enters thanks to Bloodline Keeper // Lord of Lineage:

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 (Bloodline Keeper is one).

1. Staff of the Storyteller — When Bloodline Keeper // Lord of Lineage makes a Vampire 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 (Bloodline Keeper is one).

When a Vampire enters thanks to Bloodline Keeper // Lord of Lineage:

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 (Bloodline Keeper is one).

When Bloodline Keeper // Lord of Lineage makes a Vampire 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.

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

When Bloodline Keeper // Lord of Lineage 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. Alluring Suitor // Deadly Dancer — triggers
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

208 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 (Bloodline Keeper is one).

When Bloodline Keeper // Lord of Lineage 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

134 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 (Bloodline Keeper is one).

When Bloodline Keeper // Lord of Lineage 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
4. Dwindle — kills 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 (Bloodline Keeper is one).

When a Vampire enters thanks to Bloodline Keeper // Lord of Lineage:

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

409 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 (Bloodline Keeper is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When a Vampire enters thanks to Bloodline Keeper // Lord of Lineage, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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