Instant
Boon of Boseiju
Target creature gets +X/+X until end of turn, where X is the greatest mana value among permanents you control. Untap it.
From Magic: The Gathering.
Exact printings
- Kamigawa: Neon Dynasty - #176 · uncommon · FOIL · EN
Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o2jgk0kqppb1harn6t0im.