Spelunking

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

When a land becomes tapped thanks to Spelunking:

1. Steam Vines — deals 1 damage
2. Pooling Venom — makes a player lose 2 life
3. Chronic Flooding — mills a card
4. Psychic Venom — deals 2 damage
5. Corrupted Roots — makes a player lose 2 life
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.

a land enters the battlefield — 1,560 cards in the game can cause this (Spelunking is one).

When a land enters thanks to Spelunking:

1. Primeval Bounty — gains you 3 life
2. Toph, Earthbending Master — puts a counter on a permanent
3. Dancing from Dark to Dawn — makes a token
4. Emeria Shepherd — brings a card back
5. Quest for the Necropolis — puts a quest counter on itself
6. Soul Stair Expedition — puts a quest counter on itself
7. Nissa of Shadowed Boughs — puts counters on a permanent
8. Thranduil, Sindarin Liege // Silvan Rally — makes a token
9. Silvan Reveler — returns itself from the graveyard
10. Floral Evoker — puts a +1/+1 counter on itself

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

life is gained — 2,076 cards in the game can cause this (Spelunking is one).

When Spelunking gains life:

1. Dina, Soul Steeper — makes each opponent lose 1 life
2. Marina Vendrell's Grimoire — draws you that many cards
3. South Wind Avatar — makes each opponent lose 1 life
4. Rodolf Duskbringer — grants indestructible
5. Fiendish Panda — puts a +1/+1 counter on itself
6. Veinwitch Coven — brings a card back
7. Cleric Class — puts a counter on a creature
8. Lich's Mastery — draws you that many cards
9. Wall of Limbs — puts a +1/+1 counter on itself
10. Ratchet, Field Medic // Ratchet, Rescue Racer — triggers

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

an enchantment is cast — 3,673 cards in the game can cause this (Spelunking is one).

When Spelunking is cast:

1. Master Pakku — gets +1/+1
2. Hallowed Haunting — makes a token
3. Daxos the Returned — puts a counter on a permanent
4. Tatsunari, Toad Rider — makes a token
5. Sythis, Harvest's Hand — gains you 1 life
6. Sigil of the Empty Throne — makes a token
7. Dawnhart Geist — gains you 2 life
8. Herald of the Pantheon — gains you 1 life
9. Kami of Transience — puts a +1/+1 counter on itself
10. Argothian Enchantress — draws you 1 card

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

a nontoken enchantment enters the battlefield — 3,691 cards in the game can cause this (Spelunking is one).

1. Historian's Boon — When Spelunking enters, Historian's Boon makes a token

an enchantment enters the battlefield — 3,743 cards in the game can cause this (Spelunking is one).

When Spelunking enters:

1. Calix, Guided by Fate — puts a counter on a creature
2. Elvish Archivist — draws you 1 card
3. Victor, Valgavoth's Seneschal — surveils
4. Strength from the Fallen — gives +X/+X, where X is the number of creature cards in your graveyard
5. Doomwake Giant — shrinks a creature by -1/-1
6. Cacophony Unleashed — turns something into a creature
7. Ghostly Dancers — makes a token
8. Thassa's Devourer — mills a card
9. Killian, Decisive Mentor — taps a creature
10. Thoughtrender Lamia — makes an opponent discard a card

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

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

When Spelunking makes a player draw a card:

1. Teferi's Tutelage — mills a card
2. Temmet, Naktamun's Will — gives +1/+1
3. Niv-Mizzet, Parun — deals 1 damage
4. Aether Syphon — mills a card
5. The Locust God — makes a token
6. Starving Revenant — makes each opponent lose 1 life
7. Diviner's Wand — gets +1/+1
8. Ominous Seas — puts a foreshadow counter on itself
9. Dream Trawler — gets +1/+0

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