Ironhammer the Giant (HA07-EN034) - Hidden Arsenal 7: Knight of Stars Unlimited

If you control "D.D. Esper Star Sparrow", "Beast-Warrior Puma" and "Phoenix Beast Gairuda", you can Special Summon this card (from your hand). While this card is face-up on the field, it cannot change its battle position. Once per turn: You can target 1 monster you control; it can attack your opponent directly this turn.