If this card is in your hand: You can detach 1 Xyz Material from a monster on either field, and if you do, Special Summon this card. If this card is Normal or Special Summoned: You can add 1 "Goblin Biker" Spell/Trap from your Deck to your hand. You can only use each effect of "Goblin Biker Dugg Charger" once per turn.