Coach King Giantrainer (NUMH-EN037)

3 Level 8 monsters // You can detach 1 Xyz Material from this card; draw 1 card and reveal it, then if it was a monster, inflict 800 damage to your opponent. You cannot conduct your Battle Phase the turn you activate this effect. You can use the effect of "Coach King Giantrainer" up to thrice per turn.