Boros Charm is a uncommon Instant card from GRN Guild Kit (GK1), collector number 84. Current market price: $4.97, TCGplayer market prices via Scryfall.
Choose one — • Boros Charm deals 4 damage to target player or planeswalker. • Permanents you control gain indestructible until end of turn. • Target creature gains double strike until end of turn.