shinyskarmory, Take a Pikachu as a backup. This Pikachu thinks that its in Mystery Dungeon, so it must have the following moveset ASAP:
Discharge(hits everyone in the room)
Nasty Plot(linked move)
Grass Knot/Brick Break(coverage)
It can evolve after confronting/soloing Palkia, assuming it has that moveset already. Also, whenever it uses Nasty Plot, it must immediately use the attack that is right after it(for example, if Nasty Plot is in moveslot 3, then you must use whatever move is in moveslot 4 after using Nasty Plot). Same Restrictions for PBR.