edhseer Commander synergy, explained
Sorcery
Mana cost: {1}{U}
Return target creature to its owner's hand.
on-cast — bounce
Harmonize {5}{U}
Causes: a creature leaves the battlefield.
Cares about: nothing.
a sorcery is cast — 3,720 cards in the game can cause this (Ureni's Rebuff is one).
When Ureni's Rebuff is cast:
424 other cards care about it too. These are the ones with the most connections.
a nontoken creature leaves the battlefield — 4,133 cards in the game can cause this (Ureni's Rebuff is one).
3 other cards care about it too. These are the ones with the most connections.
a creature leaves the battlefield — 4,238 cards in the game can cause this (Ureni's Rebuff is one).
When a creature leaves the battlefield thanks to Ureni's Rebuff:
25 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 (Ureni's Rebuff is one).
When Ureni's Rebuff is cast:
5 other cards care about it too. These are the ones with the most connections.