Ob Nixilis, the Fallen

a Demon enters the battlefield — 284 cards in the game can cause this (Ob Nixilis is one).

When Ob Nixilis, the Fallen enters:

1. Blood Speaker — returns itself from the graveyard
2. Be'lakor, the Dark Master — deals its power damage

put a land onto the battlefield — 1,560 cards in the game can cause this.

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

1,550 other cards cause it too. These are the ones with the most connections.

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

When Ob Nixilis, the Fallen gets a counter:

1. Hollowmurk Siege — draws you 1 card
2. Ant-Man, Colony Commander — makes a token
3. Earth Kingdom General — gains you that much life
4. Casey Jones, Back Alley Brute — deals that much damage
5. Generous Patron — draws you 1 card
6. Shalai and Hallar — deals that much damage
7. Danny Pink — draws you 1 card
8. Enduring Scalelord — puts a +1/+1 counter on itself
9. Bold Plagiarist — puts counters on a permanent
10. Mikey & Leo, Chaos & Order — draws you 1 card

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

life is lost — 3,160 cards in the game can cause this (Ob Nixilis is one).

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

1. Far Fortune, End Boss — raises your speed
2. Zahur, Glory's Past — raises your speed
3. Mendicant Core, Guidelight — raises your speed
4. Aether Syphon — raises your speed
5. Vnwxt, Verbose Host — raises your speed
6. Embalmed Ascendant — raises your speed
7. Slick Imitator — raises your speed
8. Oath of Lim-Dûl — sacrifices an enchantment
9. Marina Vendrell's Grimoire — triggers
10. Lich's Mastery — triggers

46 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 (Ob Nixilis is one).

1. All Will Be One — When Ob Nixilis, the Fallen 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 (Ob Nixilis is one).

When Ob Nixilis, the Fallen attacks:

1. Temmet, Naktamun's Will — draws you 1 card
2. Grim Javelineer — gives +1/+0
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
8. Banon, the Returners' Leader — draws and discards
9. Toph, Earthbending Master — puts a counter on a permanent
10. Three Dog, Galaxy News DJ — sacrifices an Aura

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 (Ob Nixilis is one).

When Ob Nixilis, the Fallen 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. Anim Pakal, Thousandth Moon — puts a +1/+1 counter on itself
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

180 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 (Ob Nixilis is one).

When Ob Nixilis, the Fallen blocks:

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

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

a nontoken creature attacks — 17,934 cards in the game can cause this (Ob Nixilis is one).

1. Mardu Ascendancy — When Ob Nixilis, the Fallen attacks, Mardu Ascendancy makes a token

2 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 (Ob Nixilis is one).

When Ob Nixilis, the Fallen 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

300 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 (Ob Nixilis is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Ob Nixilis, the Fallen 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.