Thrasios, Triton Hero

a Merfolk deals combat damage — 386 cards in the game can cause this (Thrasios is one).

1. Seafloor Oracle — When Thrasios, Triton Hero deals combat damage, Seafloor Oracle draws you 1 card

a Merfolk enters the battlefield — 397 cards in the game can cause this (Thrasios is one).

When Thrasios, Triton Hero enters:

1. Forerunner of the Heralds — puts a +1/+1 counter on itself
2. Deeproot Elite — puts a counter on a Merfolk
3. River Sneak — gets +1/+1

you scry — 420 cards in the game can cause this (Thrasios is one).

When Thrasios, Triton Hero scries:

1. Prudent Fateseer // Peer Review — gives +1/+0
2. Diviner of Victory // Unwind History — gets +1/+1
3. Saheeli, Consul of Oversight — makes a token
4. Celeborn the Wise — makes your creatures bigger
5. Proft, Consulting Detective — puts a +1/+1 counter on itself
6. Matoya, Archon Elder — draws you 1 card
7. Denzilore Fatehold — puts a counter on a creature
8. Elminster — costs less
9. Elrond, Master of Healing — puts a counter on a creature
10. Galadriel of Lothlórien — puts a land onto the battlefield

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

a nontoken Wizard enters the battlefield — 1,243 cards in the game can cause this (Thrasios is one).

1. Inalla, Archmage Ritualist — When Thrasios, Triton Hero enters, Inalla, Archmage Ritualist makes a token

a Wizard creature enters the battlefield — 1,264 cards in the game can cause this (Thrasios is one).

1. Diviner's Wand — When Thrasios, Triton Hero enters, Diviner's Wand triggers

a card is drawn — 3,815 cards in the game can cause this (Thrasios is one).

When Thrasios, Triton Hero 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. Ominous Seas — puts a foreshadow counter on itself
7. Dream Trawler — gets +1/+0
8. Iron Man, Armored Avenger — puts a counter on a creature
9. The Astonishing Ant-Man — puts a +1/+1 counter on itself
10. Psychosis Crawler — makes each opponent lose 1 life

57 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 (Thrasios is one).

When Thrasios, Triton Hero attacks:

1. Far Fortune, End Boss — deals 1 damage
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

115 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 (Thrasios is one).

When Thrasios, Triton Hero 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. Saw — sacrifices a creature
7. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
8. Ultima Weapon — kills a creature an opponent controls
9. Total War — kills a creature

184 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 (Thrasios is one).

When Thrasios, Triton Hero 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 creature enters the battlefield — 19,800 cards in the game can cause this (Thrasios is one).

When Thrasios, Triton Hero enters:

1. Slash, Reptile Rampager — deals 2 damage
2. Gimli of the Glittering Caves — puts counters on a permanent
3. Ray Fillet, Wave Warrior — puts a counter on itself
4. Legolas Greenleaf — puts a counter on a permanent
5. The Neutrinos — gets +1/+0
6. Wingnut, Bat on the Belfry — grants flying, haste and menace
7. Aetherstorm Roc — puts a counter on a permanent you control
8. Raphael, Most Attitude — exiles a card from your library

311 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 (Thrasios is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Thrasios, Triton Hero enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself
2. Ivora, Insatiable Heir — When Ivora, Insatiable Heir enters thanks to Thrasios, Triton Hero, it makes a token
3. Path of Mettle // Metzali, Tower of Triumph — When Path of Mettle // Metzali, Tower of Triumph enters thanks to Thrasios, Triton Hero, it deals 1 damage

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