Beast Mode (MSC) from Marvel Super Heroes Commander, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Rudy Siswanto
• Card Text:
  Teamwork 1 (As an additional cost to cast this spell, you may tap any number of creatures you control with total power 1 or more.)
  Target creature gets +2/+2 and gains trample until end of turn. Also put a +1/+1 counter on that creature if this spell was cast using teamwork.