edhseer Commander synergy, explained
Instant
Mana cost: {1}{G}
Target creature gets +X/+X until end of turn, where X is the greatest mana value among permanents you control. Untap it.
on-cast — gives +X/+X, where X is the greatest mana value among permanents you control
on-cast — untaps a permanent
Causes: untap a creature.
Cares about: nothing.
a creature untaps — 519 cards in the game can cause this (Boon of Boseiju is one).
an instant is cast — 3,931 cards in the game can cause this (Boon of Boseiju is one).
When Boon of Boseiju 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 (Boon of Boseiju is one).
When Boon of Boseiju is cast:
5 other cards care about it too. These are the ones with the most connections.