Ob Nixilis, the Fallen

a Demon enters the battlefield — 170 cards in Ob Nixilis's colors can cause this (Ob Nixilis is one).

1. Blood Speaker — When Ob Nixilis, the Fallen enters, Blood Speaker returns itself from the graveyard

put a land onto the battlefield — 447 cards in Ob Nixilis's colors can cause this.

1. Bitterthorn, Nissa's Animus — When a land enters thanks to Bitterthorn, Nissa's Animus, Ob Nixilis, the Fallen makes a player lose 3 life
2. Sword of the Animist — When a land enters thanks to Sword of the Animist, Ob Nixilis, the Fallen makes a player lose 3 life
3. Explorer's Scope — When a land enters thanks to Explorer's Scope, Ob Nixilis, the Fallen makes a player lose 3 life
4. Dragon-Cursed Halls — When Dragon-Cursed Halls enters, Ob Nixilis, the Fallen makes a player lose 3 life
5. Blackbloom Rogue // Blackbloom Bog — When Blackbloom Rogue // Blackbloom Bog enters, Ob Nixilis, the Fallen makes a player lose 3 life
6. Malakir Rebirth // Malakir Mire — When Malakir Rebirth // Malakir Mire enters, Ob Nixilis, the Fallen makes a player lose 3 life
7. Abstergo Entertainment — When Abstergo Entertainment enters, Ob Nixilis, the Fallen makes a player lose 3 life
8. Great Hall of the Biblioplex — When Great Hall of the Biblioplex enters, Ob Nixilis, the Fallen makes a player lose 3 life
9. Hall of Oracles — When Hall of Oracles enters, Ob Nixilis, the Fallen makes a player lose 3 life
10. Gerrard's Hourglass Pendant — When a land enters thanks to Gerrard's Hourglass Pendant, Ob Nixilis, the Fallen makes a player lose 3 life

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

a creature gets a counter — 542 cards in Ob Nixilis's colors can cause this (Ob Nixilis is one).

When Ob Nixilis, the Fallen gets a counter:

1. Bold Plagiarist — puts counters on a permanent
2. Omarthis, Ghostfire Initiate — puts a counter on a permanent

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

life is lost — 1,256 cards in Ob Nixilis's colors can cause this (Ob Nixilis is one).

When Ob Nixilis, the Fallen makes a player lose life:

1. Hour of Victory — raises your speed
2. Walking Sarcophagus — raises your speed
3. Gas Guzzler — raises your speed
4. Gastal Raider — raises your speed
5. Risen Necroregent — raises your speed
6. The Master of Lake-town — mills a card
7. Starting Column — raises your speed
8. Oath of Lim-Dûl — sacrifices an enchantment
9. Lich's Mastery — triggers
10. Lich's Tomb — sacrifices a permanent

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

a creature attacks — 3,478 cards in Ob Nixilis's colors can cause this (Ob Nixilis is one).

When Ob Nixilis, the Fallen attacks:

1. Adaptive Omnitool — searches a library
2. Chorale of the Void — brings a card back
3. Staff of Titania — makes a token
4. Inquisitorial Rosette — makes a token
5. Wand of Orcus — grants deathtouch
6. Andúril, Flame of the West — makes 2 tokens
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. Throwing Knife — sacrifices itself

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

anything attacks — 3,478 cards in Ob Nixilis's colors can cause this (Ob Nixilis is one).

When Ob Nixilis, the Fallen attacks:

1. Grim Javelineer — gives +1/+0
2. ED-E, Lonesome Eyebot — puts a quest counter on itself
3. Fire Navy Trebuchet — makes a token
4. Stensian Sanguinist // Exsanguinate — grants deathtouch
5. Rev, Tithe Extractor — grants deathtouch
6. Boggart Prankster — gives +1/+0
7. Within Range — makes each opponent lose life
8. Curse of Disturbance — makes a token
9. Dawnsire, Sunstar Dreadnought — deals 100 damage
10. Twins of Discord — triggers

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

a creature blocks — 3,478 cards in Ob Nixilis's colors can cause this (Ob Nixilis is one).

When Ob Nixilis, the Fallen blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Barrow-Blade — strips abilities
3. Dead-Iron Sledge — kills a creature

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

a creature deals combat damage — 3,478 cards in Ob Nixilis's colors can cause this (Ob Nixilis is one).

1. Hive Mind Coprocessor — When Ob Nixilis, the Fallen deals combat damage, Hive Mind Coprocessor makes you lose life

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

a creature is cast — 3,493 cards in Ob Nixilis's colors can cause this (Ob Nixilis is one).

When Ob Nixilis, the Fallen is cast:

1. Endrek Sahr, Master Breeder — makes that spell's mana value tokens
2. Oketra's Monument — makes a token
3. Bontu's Monument — makes each opponent lose 1 life
4. Vanquisher's Banner — draws you 1 card
5. Rhonas's Monument — gives +2/+2
6. Skittering Horror — sacrifices itself
7. Skittering Skirge — sacrifices itself
8. Skittering Monstrosity — sacrifices itself
9. Hazoret's Monument — draws and discards
10. Kefnet's Monument — triggers

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

a nontoken creature enters the battlefield — 3,680 cards in Ob Nixilis's colors can cause this (Ob Nixilis is one).

1. Minion Reflector — When Ob Nixilis, the Fallen enters, Minion Reflector makes a token

a creature enters the battlefield — 3,967 cards in Ob Nixilis's colors can cause this (Ob Nixilis is one).

When Ob Nixilis, the Fallen enters:

1. Ayara, First of Locthwain — makes each opponent lose 1 life
2. Blasting Station — untaps itself
3. Bloodline Pretender — puts a +1/+1 counter on itself
4. Soultether Golem — puts a time counter on itself
5. Poisonbelly Ogre — makes a player lose 1 life
6. Monkey Cage — sacrifices itself
7. Tainted Aether — makes a player sacrifice a creature or land
8. Lethal Vapors — kills it
9. Spreading Plague — kills a creature
10. Wretched Anurid — makes you lose life

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