Activate 1 of these effects (but you can only use each effect of "Tachyon Spiral of Destruction" once per turn); ●If you control a "Galaxy" Xyz Monster: Destroy all face-up cards your opponent controls whose effects are negated. ●Target 1 "Tachyon" card in your GY, except "Tachyon Spiral of Destruction"; add it to your hand. ●Target 1 Dragon "Number" monster in your GY; Special Summon it in Defense Position.