Oko, the Ringleader

a permanent enters the battlefield — 152 cards in the game can cause this (Oko is one).

1. Dawn-Blessed Pennant — When an Elk enters thanks to Oko, the Ringleader, Dawn-Blessed Pennant gains you 1 life
2. Jean-Luc Picard, Luminary — When Oko, the Ringleader enters, Jean-Luc Picard, Luminary draws you 1 card
3. Altar of the Brood — When an Elk enters thanks to Oko, the Ringleader, Altar of the Brood mills a card
4. Yoshimaru, Ever Faithful — When Oko, the Ringleader enters, Yoshimaru, Ever Faithful puts a +1/+1 counter on itself
5. Amareth, the Lustrous — When an Elk enters thanks to Oko, the Ringleader, Amareth, the Lustrous searches a library
6. Rimefire Torque — When an Elk enters thanks to Oko, the Ringleader, Rimefire Torque puts a charge counter on itself
7. Eye of Singularity — When an Elk enters thanks to Oko, the Ringleader, Eye of Singularity kills a permanent

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

a planeswalker it grants abilities to — 312 cards in the game can cause this.

1. Ichormoon Gauntlet — Ichormoon Gauntlet gives Oko, the Ringleader an extra ability
2. Way of the Cryomancer — Way of the Cryomancer gives Oko, the Ringleader an extra ability
3. Way of the Wildspeaker — Way of the Wildspeaker gives Oko, the Ringleader an extra ability

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

a planeswalker is cast — 361 cards in the game can cause this (Oko is one).

When Oko, the Ringleader is cast:

1. Jaya's Phoenix — returns itself from the graveyard
2. Interplanar Beacon — gains you 1 life
3. Defiler of Vigor — puts a counter on a creature
4. Defiler of Dreams — draws you 1 card
5. Primeval Bounty — puts 3 counters on a creature
6. Tetsuko Umezawa, Pursuer — gets +1/+1
7. Thor, God of Thunder — deals that spell's mana value damage
8. Krile Baldesion — brings a card back
9. Summon: Good King Mog XII — makes a token
10. Blood Funnel — sacrifices a creature

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

a planeswalker enters the battlefield — 366 cards in the game can cause this (Oko is one).

1. Liliana the Repentant — When an Elk enters thanks to Oko, the Ringleader, Liliana the Repentant mills a card
2. Liliana the Faultless — When an Elk enters thanks to Oko, the Ringleader, Liliana the Faultless gains you 1 life
3. Builder's Talent — When a permanent enters thanks to Oko, the Ringleader, Builder's Talent puts a counter on a creature
4. Brainstealer Dragon — When an Elk enters thanks to Oko, the Ringleader, Brainstealer Dragon makes a player lose life equal to its mana value
5. Cloudstone Curio — When an Elk enters thanks to Oko, the Ringleader, Cloudstone Curio triggers

a card is discarded — 2,042 cards in the game can cause this (Oko is one).

When Oko, the Ringleader makes a player discard a card:

1. Ivora, Insatiable Heir — puts a +1/+1 counter on itself
2. Cool but Rude — deals 2 damage
3. Containment Construct — brings a card back
4. Moonstone, Harsh Mistress — brings a card back
5. Lazotep Chancellor — puts 2 counters on a Zombie or Army
6. Magmakin Artillerist — deals that much damage
7. Inti, Seneschal of the Sun — exiles a card from your library
8. Pitchstone Wall — sacrifices itself
9. Currency Converter — exiles it
10. Hostile Investigator — triggers

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

provide a creature to sacrifice — 2,720 cards in the game can cause this.

1. Jalira, Master Polymorphist — Oko, the Ringleader makes fodder for Jalira, Master Polymorphist
2. Polymorph — Oko, the Ringleader makes fodder for Polymorph
3. Birthing Ritual — Oko, the Ringleader makes fodder for Birthing Ritual
4. Proteus Staff — Oko, the Ringleader makes fodder for Proteus Staff
5. Synthetic Destiny — Oko, the Ringleader makes fodder for Synthetic Destiny
6. Mass Polymorph — Oko, the Ringleader makes fodder for Mass Polymorph

2,714 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 (Oko is one).

When an Elk enters thanks to Oko, the Ringleader:

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 (Oko is one).

1. Staff of the Storyteller — When Oko, the Ringleader makes an Elk 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 (Oko is one).

When an Elk enters thanks to Oko, the Ringleader:

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 (Oko is one).

When Oko, the Ringleader makes an Elk 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 card is drawn — 3,815 cards in the game can cause this (Oko is one).

When Oko, the Ringleader makes a player draw a card:

1. Temmet, Naktamun's Will — gives +1/+1
2. Niv-Mizzet, Parun — deals 1 damage
3. Aether Syphon — mills a card
4. The Locust God — makes a token
5. Starving Revenant — makes each opponent lose 1 life
6. Diviner's Wand — gets +1/+1
7. Ominous Seas — puts a foreshadow counter on itself
8. Dream Trawler — gets +1/+0
9. Iron Man, Armored Avenger — puts a counter on a creature
10. The Astonishing Ant-Man — puts a +1/+1 counter on itself

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