Buffs type:
Freeze need a damage buff, wizard need an hp buff, dark prince need quicker charge, little prince may need a guardian ability buff, golden knight may need an hp buff, royal chef may need a buff to hitspeed while nerfing or keeping pancake duration the same. It is still bad and not used at all because of the hitspeed, cannoneer need may require any buff but should keep the damage per second the same so that cannoneer does not become op again.
Nerf types:
Evo dart goblin poison not stay infinetly, goblin stein ability nerf, royal recruits need an hp or damage nerf, prince may need charge damage nerf.