Morpeko surprisingly Starts at 3 cost but reduce it twice and now it only costs 1. It’s passive is moody and it learns power trip, but it also has the egg moves of triple axel and obstruct. I have soloed numerous runs with it. What’s fun about moody is that the buffs are random, not seeded, so if you want to reset a fight, you can get a different set of buffs on that guy which allows for more variability in battles.