Stronghold Arena

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

When Stronghold Arena 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.

life is lost — 3,160 cards in the game can cause this (Stronghold Arena is one).

When Stronghold Arena makes a player lose life:

1. The Master of Lake-town — mills a card
2. Intermediate Chirography — puts a counter on a creature
3. Vilis, Broker of Blood — draws you that many cards
4. Vengeful Warchief — puts a +1/+1 counter on itself
5. Wax-Wane Witness — gets +1/+0
6. Moonstone Harbinger — gives +1/+0
7. Transcendence — gains you life
8. Oath of Lim-Dûl — sacrifices an enchantment
9. Lich's Tomb — sacrifices a permanent
10. Gonti's Machinations — puts a counter on a permanent you control

46 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 (Stronghold Arena is one).

When Stronghold Arena is cast:

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

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

an enchantment enters the battlefield — 3,743 cards in the game can cause this.

When Stronghold Arena:

1. Calix, Guided by Fate — enters, Calix, Guided by Fate puts a counter on a creature
2. Elvish Archivist — enters, Elvish Archivist draws you 1 card
3. Victor, Valgavoth's Seneschal — enters, Victor, Valgavoth's Seneschal surveils
4. Strength from the Fallen — enters, Strength from the Fallen gives +X/+X, where X is the number of creature cards in your graveyard
5. Doomwake Giant — enters, Doomwake Giant shrinks a creature by -1/-1
6. Cacophony Unleashed — enters, Cacophony Unleashed turns something into a creature
7. Ghostly Dancers — enters, Ghostly Dancers makes a token
8. Thassa's Devourer — enters, Thassa's Devourer mills a card
9. Emeria Shepherd — enters thanks to Emeria Shepherd, it gains you life
10. Zoraline, Cosmos Caller — enters thanks to Zoraline, Cosmos Caller, it gains you life
11. Sun-Blessed Healer — enters thanks to Sun-Blessed Healer, it gains you life
12. Moira and Teshar — enters thanks to Moira and Teshar, it gains you life
13. Bilbo, Unexpected Adventurer — enters thanks to Bilbo, Unexpected Adventurer, it gains you life
14. Starfield of Nyx — enters thanks to Starfield of Nyx, it gains you life
15. Astelli Reclaimer — enters thanks to Astelli Reclaimer, it gains you life
16. Harnessed Snubhorn — enters thanks to Harnessed Snubhorn, it gains you life
17. Eiganjo Dynastorian // Replenish — enters thanks to Eiganjo Dynastorian // Replenish, it gains you life
18. Yuna, Hope of Spira — enters thanks to Yuna, Hope of Spira, it gains you life
19. Killian, Decisive Mentor — enters, Killian, Decisive Mentor taps a creature
20. Thoughtrender Lamia — enters, Thoughtrender Lamia makes an opponent discard a card

76 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 (Stronghold Arena is one).

1. Nature's Wrath — When Stronghold Arena enters, Nature's Wrath makes a player sacrifice a Swamp or permanent

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