Mecha Phantom Beast Tetherwolf (MP14-EN008) [2014 Mega-Tins Mega Pack]

When this card is Normal Summoned: Special Summon 1 "Mecha Phantom Beast Token" (Machine-Type/WIND/Level 3/ATK 0/DEF 0). This card's Level is increased by the total Levels of all "Mecha Phantom Beast Tokens" you control. While you control a Token, this card cannot be destroyed by battle or card effects. During the Damage Step of either player's turn, if this card battles any opponent's monster: You can Tribute 1 Token once per battle; this card gains 800 ATK, until the End Phase.