Akki Battle Squad (NEC) from Neon Dynasty Commander, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Steve Prescott
• Card Text:
  Whenever one or more modified creatures you control attack, untap all modified creatures you control. After this combat phase, there is an additional combat phase. This ability triggers only once each turn. (Equipment, Auras you control, and counters are modifications.)