edhseer Commander synergy, explained
Instant
Mana cost: {R}{G}
Target creature you control and up to one other target legendary creature you control each deal damage equal to their power to target creature you don't control.
on-cast — deals damage
on-cast — deals damage
Causes: a creature deals noncombat damage.
Cares about: nothing.
a creature deals noncombat damage — 1,420 cards in the game can cause this (Friendly Rivalry is one).
When a creature deals noncombat damage thanks to Friendly Rivalry:
12 other cards care about it too. These are the ones with the most connections.
anything deals noncombat damage — 3,068 cards in the game can cause this (Friendly Rivalry is one).
When a creature deals noncombat damage thanks to Friendly Rivalry:
36 other cards care about it too. These are the ones with the most connections.
an instant is cast — 3,931 cards in the game can cause this (Friendly Rivalry is one).
When Friendly Rivalry is cast:
427 other cards care about it too. These are the ones with the most connections.
a creature is dealt damage — 18,923 cards in the game can cause this (Friendly Rivalry is one).
When a creature is dealt damage thanks to Friendly Rivalry:
17 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 (Friendly Rivalry is one).
When Friendly Rivalry is cast:
5 other cards care about it too. These are the ones with the most connections.