Runesword (CHR) from Chronicles, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Christopher Rush
• Card Text:
  3, T: Target attacking creature gets +2/+0 until end of turn. Any creature damaged by that creature cannot regenerate this turn; if such a creature receives lethal damage this turn, remove it from the game. If the target leaves play before end of turn, bury Runesword.