Wojek Bodyguard (GRN) from Guilds of Ravnica, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Tyler Walpole
• Card Text:
  Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
  Wojek Bodyguard can't attack or block alone.