Kenessos, Priest of Thassa

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

1. Seafloor Oracle — When Kenessos, Priest of Thassa deals combat damage, Seafloor Oracle draws you 1 card

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

When Kenessos, Priest of Thassa 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 (Kenessos is one).

When Kenessos, Priest of Thassa 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 Cleric enters the battlefield — 722 cards in the game can cause this (Kenessos is one).

1. Cleric of Life's Bond — When Kenessos, Priest of Thassa enters, Cleric of Life's Bond gains you 1 life

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

anything attacks — 17,934 cards in the game can cause this (Kenessos is one).

When Kenessos, Priest of Thassa attacks:

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

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 (Kenessos is one).

When Kenessos, Priest of Thassa 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

183 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 (Kenessos is one).

When Kenessos, Priest of Thassa 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 (Kenessos is one).

When Kenessos, Priest of Thassa attacks:

1. Mardu Ascendancy — makes a token
2. Basri Ket — makes a token

1 other card cares 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 (Kenessos is one).

When Kenessos, Priest of Thassa 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

307 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 (Kenessos is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Kenessos, Priest of Thassa 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 Kenessos, Priest of Thassa, it makes a token
3. Path of Mettle // Metzali, Tower of Triumph — When Path of Mettle // Metzali, Tower of Triumph enters thanks to Kenessos, Priest of Thassa, it deals 1 damage
4. Dogmeat, Ever Loyal — When Dogmeat, Ever Loyal enters thanks to Kenessos, Priest of Thassa, it mills a card
5. The Earth King — When The Earth King enters thanks to Kenessos, Priest of Thassa, it makes a token
6. SP//dr, Piloted by Peni — When SP//dr, Piloted by Peni enters thanks to Kenessos, Priest of Thassa, it puts a counter on a creature
7. Mu Yanling, Wind Rider — When Mu Yanling, Wind Rider enters thanks to Kenessos, Priest of Thassa, it makes a token
8. The Rani — When The Rani enters thanks to Kenessos, Priest of Thassa, it makes a token
9. J. Jonah Jameson — When J. Jonah Jameson enters thanks to Kenessos, Priest of Thassa, it triggers
10. Ultimecia, Temporal Threat — When Ultimecia, Temporal Threat enters thanks to Kenessos, Priest of Thassa, it taps a creature an opponent controls

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