Zushin the Sleeping Giant (DLCS-EN114) [Dragons of Legend: The Complete Series]

Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by Tributing a monster you control with 10 Zushin Counters, and cannot be Special Summoned by other ways. Once per turn: You can reveal this card in your hand, then target 1 Level 1 Normal Monster you control (keep this card revealed until the end of this turn); place 1 Zushin Counter on it. Unaffected by other cards' effects. If this card battles a monster, during damage calculation: ATK and DEF of this card become equal to the current ATK of the monster it is battling +1000, during that damage calculation only.