Knight Exemplar (M11) from Magic 2011, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Jason Chan
• Card Text:
  First strike (This creature deals combat damage before creatures without first strike.)
  Other Knight creatures you control get +1/+1 and are indestructible. (Lethal damage and effects that say "destroy" don't destroy them.)