If you control an "Astraforge" monster: You can Special Summon this card from your hand. If this card is Normal or Special Summoned: You can place 1 "Astraforge" monster from your Deck face-up in your Spell & Trap Zone as a Continuous Spell. You can only use each effect of "Astraforge Arcanist" once per turn. An "Astraforge" Xyz Monster that has this card as material gains this effect. ● Your opponent cannot activate cards or effects when this card declares an attack.