Elder Druid

a land becomes tapped — 50 cards in the game can cause this (Elder Druid is one).

When a land becomes tapped thanks to Elder Druid:

1. Steam Vines — deals 1 damage
2. Pooling Venom — makes a player lose 2 life
3. Chronic Flooding — mills a card
4. Roots of Life — gains you 1 life
5. Psychic Venom — deals 2 damage
6. Orcish Mine — triggers
7. Spreading Algae — kills it
8. Blight — kills it
9. Uncontrolled Infestation — kills it
10. Kudzu — kills a land

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

an artifact becomes tapped — 88 cards in the game can cause this (Elder Druid is one).

When an artifact becomes tapped thanks to Elder Druid:

1. Powerleech — gains you 1 life
2. Artifact Possession — deals 2 damage
3. Haunting Wind — deals 1 damage
4. Relic Putrescence — puts a counter on a permanent
5. Relic Bind — triggers

a creature untaps — 519 cards in the game can cause this (Elder Druid is one).

1. Fishing Pole — When Elder Druid untaps, Fishing Pole triggers

a creature becomes tapped — 565 cards in the game can cause this (Elder Druid is one).

When Elder Druid becomes tapped:

1. Unctus, Grand Metatect — draws you 1 card
2. Sharae of Numbing Depths — draws you 1 card
3. Rewrite History — draws you 1 card
4. Stinging Licid — deals 2 damage
5. Gideon's Avenger — puts a +1/+1 counter on itself
6. Icewrought Sentry — gets +2/+1
7. Hawkeye's Bow — deals 1 damage
8. Cryoshatter — kills a creature
9. Don't Move — kills a creature
10. Hylda of the Icy Crown — triggers

11 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 (Elder Druid is one).

1. Cleric of Life's Bond — When Elder Druid 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.

an Elf attacks — 723 cards in the game can cause this (Elder Druid is one).

When Elder Druid 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 (Elder Druid is one).

1. Wirewood Hivemaster — When Elder Druid enters, Wirewood Hivemaster makes a token

an Elf enters the battlefield — 752 cards in the game can cause this (Elder Druid is one).

When Elder Druid enters:

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

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 (Elder Druid is one).

When Elder Druid 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

117 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 (Elder Druid is one).

When Elder Druid attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Kindred Discovery — draws you 1 card
4. Saw — sacrifices a creature

189 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 (Elder Druid is one).

1. Tide of War — When Elder Druid blocks, Tide of War sacrifices a creature

27 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 (Elder Druid is one).

When Elder Druid enters:

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

310 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 (Elder Druid is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Elder Druid enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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