edhseer Commander synergy, explained
Enchantment
Mana cost: {2}{R}
At the beginning of each player's end step, this enchantment deals X damage to that player, where X is the number of untapped lands they control.
triggered — deals damage
Causes: anything deals noncombat damage.
Cares about: an end step.
anything deals noncombat damage — 3,068 cards in the game can cause this (Citadel of Pain is one).
When Citadel of Pain deals noncombat damage:
37 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 (Citadel of Pain is one).
When Citadel of Pain makes a player lose life:
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 (Citadel of Pain is one).
When Citadel of Pain is cast:
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 (Citadel of Pain is one).
an enchantment enters the battlefield — 3,743 cards in the game can cause this (Citadel of Pain is one).
When Citadel of Pain enters:
63 other cards care about it too. These are the ones with the most connections.
anything is dealt damage — 19,812 cards in the game can cause this (Citadel of Pain is one).
When a player is dealt damage thanks to Citadel of Pain:
5 other cards care about it too. These are the ones with the most connections.