Number 54: Lion Heart (NUMH-EN026) [Number Hunters]

3 Level 1 monsters // This face-up Attack Position card cannot be destroyed by battle. When you take battle damage from battles involving this card: Inflict damage to your opponent equal to the amount of battle damage you took. If this card battles an opponent's monster, during damage calculation in either player's turn: You can detach 1 Xyz Material from this card; your opponent takes any battle damage you would have taken from that battle.