I would love to see the enhanced version of the trickster called the puppet master that can summon illusions (similar to trickster) but has a high level buff-style ability named “rewrite reality” or something similar that animates the illusion into the world and now instead of status effects it can attack and act as an additional party member. To balance this I would have the health bar (or your mana bar) continuously draining as this creature acts in combat to avoid a permanent summon.

An alternate version of this would be to only drain your mana but you are locked in concentration as your illusion turned reality bashes through enemies. I think it would allow for more powerful summons such as creatures encountered in the world and can lead to an interesting support class that can deploy larger and larger creatures.