Undercity Upheaval

a creature gets a counter — 2,691 cards in the game can cause this (Undercity Upheaval is one).

When a creature gets a counter thanks to Undercity Upheaval:

1. Hollowmurk Siege — draws you 1 card
2. Ant-Man, Colony Commander — makes a token
3. Earth Kingdom General — gains you that much life
4. Casey Jones, Back Alley Brute — deals that much damage
5. Shalai and Hallar — deals that much damage
6. Danny Pink — draws you 1 card
7. Enduring Scalelord — puts a +1/+1 counter on itself
8. Mikey & Leo, Chaos & Order — draws you 1 card
9. Knight of Wundagore — puts a +1/+1 counter on itself
10. Omarthis, Ghostfire Initiate — puts a counter on a permanent

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

a creature in a graveyard — 2,769 cards in the game can cause this (Undercity Upheaval is one).

1. Rankle and Torbran — Rankle and Torbran puts cards into the graveyard, and Undercity Upheaval gets bigger
2. Shriveling Rot — Shriveling Rot puts cards into the graveyard, and Undercity Upheaval gets bigger
3. Caesar, Legion's Emperor — Caesar, Legion's Emperor puts cards into the graveyard, and Undercity Upheaval gets bigger
4. Ayara, First of Locthwain — Ayara, First of Locthwain puts cards into the graveyard, and Undercity Upheaval gets bigger
5. Foot Chopper — Foot Chopper puts cards into the graveyard, and Undercity Upheaval gets bigger
6. Blasting Station — Blasting Station puts cards into the graveyard, and Undercity Upheaval gets bigger
7. Tainted Aether — Tainted Aether puts cards into the graveyard, and Undercity Upheaval gets bigger
8. Lethal Vapors — Lethal Vapors puts cards into the graveyard, and Undercity Upheaval gets bigger
9. Grave Peril — Grave Peril puts cards into the graveyard, and Undercity Upheaval gets bigger
10. Spreading Plague — Spreading Plague puts cards into the graveyard, and Undercity Upheaval gets bigger

2,759 other cards care about it too. These are the ones with the most connections.

a sorcery is cast — 3,720 cards in the game can cause this (Undercity Upheaval is one).

When Undercity Upheaval is cast:

1. Spellweaver Volute — copies a spell
2. Lilah, Undefeated Slickshot — gets +1/+1
3. Niblis of Frost — gets +1/+1
4. Primeval Bounty — puts 3 counters on a creature
5. Tetsuko Umezawa, Pursuer — gets +1/+1
6. Thor, God of Thunder — deals that spell's mana value damage
7. Krile Baldesion — brings a card back
8. Summon: Good King Mog XII — makes a token
9. Kykar, Wind's Fury — makes a token
10. Blood Funnel — sacrifices a creature

424 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 (Undercity Upheaval is one).

1. All Will Be One — When a creature gets a counter thanks to Undercity Upheaval, All Will Be One deals that much damage

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

anything is cast — 31,128 cards in the game can cause this (Undercity Upheaval is one).

When Undercity Upheaval is cast:

1. Windrider Wizard — draws you 1 card
2. Relic Amulet — puts a charge counter on itself
3. Rockslide Sorcerer — deals 1 damage
4. Umara Wizard // Umara Skyfalls — grants flying
5. Alania, Divergent Storm — makes an opponent draw 1 card
6. Umara Mystic — gets +2/+0
7. Master of Winds — triggers

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