Karn Liberated

a nontoken permanent enters the battlefield — 142 cards in the game can cause this (Karn Liberated is one).

When Karn Liberated enters:

1. Spot, Felis catus — makes a token
2. Arbaaz Mir — deals 1 damage
3. Cadric, Soul Kindler — makes a token

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

When Karn Liberated enters:

1. Dawn-Blessed Pennant — gains you 1 life
2. Fire Lord Zuko — puts a counter on a creature
3. Jean-Luc Picard, Luminary — draws you 1 card
4. Altar of the Brood — mills a card
5. Yoshimaru, Ever Faithful — puts a +1/+1 counter on itself
6. Amareth, the Lustrous — searches a library
7. Rimefire Torque — puts a charge counter on itself
8. Eye of Singularity — kills a permanent

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

a permanent leaves the battlefield — 315 cards in the game can cause this (Karn Liberated is one).

1. Super Shredder — When a permanent leaves the battlefield thanks to Karn Liberated, Super Shredder puts a +1/+1 counter on itself

1 other card cares about it too. These are the ones with the most connections.

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

When Karn Liberated is cast:

1. Jaya's Phoenix — returns itself from the graveyard
2. Interplanar Beacon — gains you 1 life
3. Primeval Bounty — puts 3 counters on a creature
4. Tetsuko Umezawa, Pursuer — gets +1/+1
5. Thor, God of Thunder — deals that spell's mana value damage
6. Krile Baldesion — brings a card back
7. Summon: Good King Mog XII — makes a token
8. Kykar, Wind's Fury — makes a token
9. Tellah, Great Sage — 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 (Karn Liberated is one).

When Karn Liberated enters:

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

anything is exiled — 2,497 cards in the game can cause this (Karn Liberated is one).

1. The War Doctor — When a permanent is exiled thanks to Karn Liberated, The War Doctor puts a time counter on itself

anything that is not a token enters the battlefield — 25,747 cards in the game can cause this (Karn Liberated is one).

1. Canoptek Spyder — When a permanent enters thanks to Karn Liberated, Canoptek Spyder draws you 1 card

anything enters the battlefield — 26,499 cards in the game can cause this (Karn Liberated is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Karn Liberated enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself
2. HYDRA Assault Robot — When Karn Liberated enters, HYDRA Assault Robot deals 1 damage
3. Ertha Jo, Frontier Mentor — When Ertha Jo, Frontier Mentor enters thanks to Karn Liberated, it makes a token
4. Oath of Jace — When Oath of Jace enters thanks to Karn Liberated, it draws you 3 cards
5. Sokka, Bold Boomeranger — When Sokka, Bold Boomeranger enters thanks to Karn Liberated, it draws and discards
6. Era of Innovation — When Karn Liberated enters, Era of Innovation puts a counter on a permanent you control

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