Metathran Aerostat

a nontoken creature leaves the battlefield — 4,133 cards in the game can cause this (Metathran Aerostat is one).

When Metathran Aerostat leaves the battlefield:

1. Tokka & Rahzar, Unsupervised — puts a +1/+1 counter on itself
2. Splinter, the Mentor — makes a token
3. Rat King, Pale Piper — makes a token
4. Dual Nature — exiles a creature

a creature leaves the battlefield — 4,238 cards in the game can cause this (Metathran Aerostat is one).

When Metathran Aerostat leaves the battlefield:

1. Lunarch Veteran // Luminous Phantom — gains you 1 life
2. Extractor Demon — mills a card
3. Aang, Airbending Master — puts a counter on a permanent
4. Dour Port-Mage — draws you 1 card
5. Vela the Night-Clad — makes each opponent lose 1 life
6. Taeko, the Patient Avalanche — scries
7. Ninth Bridge Patrol — puts a +1/+1 counter on itself
8. Funeral March — makes a player sacrifice a creature
9. Sally Sparrow — triggers
10. Aang, at the Crossroads // Aang, Destined Savior — triggers

21 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 (Metathran Aerostat is one).

When Metathran Aerostat attacks:

1. Shaun, Father of Synths — makes a token
2. Far Fortune, End Boss — deals 1 damage
3. Temmet, Naktamun's Will — draws you 1 card
4. Grim Javelineer — gives +1/+0
5. Invisible Woman — triggers
6. Caesar, Legion's Emperor — sacrifices a creature
7. Guide of Souls — triggers
8. Campsite Cuisine — sacrifices a Food
9. Gossip's Talent — triggers
10. Banon, the Returners' Leader — draws and discards

112 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 (Metathran Aerostat is one).

When Metathran Aerostat 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 (Metathran Aerostat is one).

When Metathran Aerostat 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

24 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 (Metathran Aerostat is one).

1. Mardu Ascendancy — When Metathran Aerostat attacks, Mardu Ascendancy makes a token

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

a creature is cast — 18,010 cards in the game can cause this (Metathran Aerostat is one).

1. Champions of the Perfect — When Metathran Aerostat is cast, Champions of the Perfect draws you 1 card

90 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 (Metathran Aerostat is one).

1. Fire Nation Salvagers — When Fire Nation Salvagers enters thanks to Metathran Aerostat, it puts a counter on a creature or Vehicle
2. Goblin Goliath — When Goblin Goliath enters thanks to Metathran Aerostat, it makes a token
3. Slash, Reptile Rampager — When a creature enters thanks to Metathran Aerostat, Slash, Reptile Rampager deals 2 damage
4. Ray Fillet, Wave Warrior — When Metathran Aerostat enters, Ray Fillet, Wave Warrior puts a counter on itself
5. The Neutrinos — When a creature enters thanks to Metathran Aerostat, The Neutrinos gets +1/+0
6. Wingnut, Bat on the Belfry — When a creature enters thanks to Metathran Aerostat, Wingnut, Bat on the Belfry grants flying, haste and menace
7. Tenured Inkcaster — When Tenured Inkcaster enters thanks to Metathran Aerostat, it puts a counter on a creature
8. Aetherstorm Roc — When a creature enters thanks to Metathran Aerostat, Aetherstorm Roc puts a counter on a permanent you control
9. Raphael, Most Attitude — When a creature enters thanks to Metathran Aerostat, Raphael, Most Attitude exiles a card from your library
10. Clandestine Meddler — When Clandestine Meddler enters thanks to Metathran Aerostat, it triggers

295 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 (Metathran Aerostat is one).

1. Zenos yae Galvus // Shinryu, Transcendent Rival — When Zenos yae Galvus // Shinryu, Transcendent Rival enters thanks to Metathran Aerostat, it shrinks a creature by -2/-2
2. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When a creature enters thanks to Metathran Aerostat, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself
3. Ivora, Insatiable Heir — When Ivora, Insatiable Heir enters thanks to Metathran Aerostat, it makes a token
4. Dogmeat, Ever Loyal — When Dogmeat, Ever Loyal enters thanks to Metathran Aerostat, it mills a card
5. The Earth King — When The Earth King enters thanks to Metathran Aerostat, it makes a token
6. SP//dr, Piloted by Peni — When SP//dr, Piloted by Peni enters thanks to Metathran Aerostat, it puts a counter on a creature
7. Mu Yanling, Wind Rider — When Mu Yanling, Wind Rider enters thanks to Metathran Aerostat, it makes a token
8. The Rani — When The Rani enters thanks to Metathran Aerostat, it makes a token
9. J. Jonah Jameson — When J. Jonah Jameson enters thanks to Metathran Aerostat, it triggers
10. Ultimecia, Temporal Threat — When Ultimecia, Temporal Threat enters thanks to Metathran Aerostat, it taps a creature an opponent controls

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