Thelon of Havenwood

an Elf attacks — 723 cards in the game can cause this (Thelon of Havenwood is one).

When Thelon of Havenwood attacks:

1. Celeborn the Wise — scries
2. Tyvar the Bellicose — grants deathtouch
3. Harald Unites the Elves — shrinks a creature by -1/-1
4. Arboreal Alliance — triggers

a nontoken Elf enters the battlefield — 728 cards in the game can cause this (Thelon of Havenwood is one).

1. Wirewood Hivemaster — When Thelon of Havenwood enters, Wirewood Hivemaster makes a token

an Elf enters the battlefield — 752 cards in the game can cause this (Thelon of Havenwood is one).

When Thelon of Havenwood enters:

1. Wolverine Riders — gains you its toughness life
2. Elvish Warmaster — makes a token
3. Thranduil, the Elvenking — draws you 2 cards
4. Elvish Vanguard — puts a +1/+1 counter on itself
5. Marwyn, the Nurturer — puts a +1/+1 counter on itself
6. Woodland Weavemaster — gets +1/+1
7. High Perfect Morcant — puts a counter on a permanent an opponent controls
8. Maralen, Fae Ascendant — exiles a card from an opponent's library

anything is exiled — 2,497 cards in the game can cause this (Thelon of Havenwood is one).

1. The War Doctor — When a Fungus is exiled thanks to Thelon of Havenwood, The War Doctor puts a time counter on itself

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

anything leaves a graveyard — 2,503 cards in the game can cause this (Thelon of Havenwood is one).

When a Fungus leaves a graveyard thanks to Thelon of Havenwood:

1. Blastoneuron — makes each opponent lose 1 life
2. Defiled Crypt // Cadaver Lab — makes a token
3. Teval, the Balanced Scale — makes a token
4. Hologram Stalker — makes a token
5. Tormod, the Desecrator — makes a token
6. Quintorius, Field Historian — makes a token
7. Garrison Excavator — makes a token
8. Amzu, Swarm's Hunger — makes a token
9. Kirol, History Buff // Pack a Punch — becomes prepared
10. Teval's Judgment — triggers

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

anything gets a counter — 4,415 cards in the game can cause this (Thelon of Havenwood is one).

1. All Will Be One — When a Fungus gets a counter thanks to Thelon of Havenwood, All Will Be One deals that much damage

8 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 (Thelon of Havenwood is one).

When Thelon of Havenwood 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

118 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 (Thelon of Havenwood is one).

When Thelon of Havenwood 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

181 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 (Thelon of Havenwood is one).

When Thelon of Havenwood 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

25 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 (Thelon of Havenwood is one).

1. God-Eternal Oketra — When Thelon of Havenwood is cast, God-Eternal Oketra makes a token

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 (Thelon of Havenwood is one).

When Thelon of Havenwood enters:

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

320 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 (Thelon of Havenwood is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Thelon of Havenwood enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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