(Note: This is an alternate reality from what happened in AYF for the Phantom Ruby 2, where Scratch Cat got both the Gem of Power and the Phantom Ruby at the same time.) Phantom Scratch: When Scratch Cat has a Phantom Ruby and the Gem of Power, he'll turn into Phantom Scratch when he's in danger. Phantom Scratch is very Powerful and aggressive, but Scratch can't control Phantom Scratch, meaning if summoned, Phantom Scratch is free to rampage until defeated or worn out. (Easier said than done.)
for when Phantom Scratch attacks back, there's a broadcast block in the TSOS roster sprite just for that after TSOS Red attacks. there's even costumes for the roster blocking an attack with objects from their home realm! ...and i don't know if the beam powerup really did anything, but it IS kinda destructive...