When a Spell/Trap Card, or monster effect, is activated: Add 1 of your materials from a "Materiactor" Xyz Monster you control to your hand, and if you do, negate the activation, then apply the following effect based on the card type added. • Monster: Place 1 card from your hand on the bottom of the Deck. • Spell: "Materiactor" Xyz Monsters you control gain 1000 ATK. • Trap: You can Set that added card. You can only activate 1 "Materiactor Critical" per turn.