edhseer Commander synergy, explained
Instant
Mana cost: {1}{G}
Target creature you control gets +3/+3 and gains trample, hexproof, and indestructible until end of turn.
on-cast — gives +3/+3
on-cast — grants a keyword
Causes: nothing.
Cares about: nothing.
an instant is cast — 3,931 cards in the game can cause this (Overprotect is one).
When Overprotect is cast:
427 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 (Overprotect is one).
When Overprotect is cast:
5 other cards care about it too. These are the ones with the most connections.