Boros Charm (GK1) from GRN Guild Kit, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Zoltan Boros
• Card Text:
  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.