Add 1 "Goblin" monster from your Deck to your hand, then you can apply the following effect. • Detach 1 Xyz Material from a monster on either field, and if you do, Special Summon 1 Level 4 or lower "Goblin" monster from your hand. You can banish this card from your GY; detach 1 Xyz Material from a monster on either field, then you can add 1 "Goblin" monster from your GY to your hand. You can only use each effect of "Goblin Biker Grand Entrance" once per turn.