With the latest warlock tuning coming up: For an idea for prismatic: have a way to build all the helpers for warlock; arc soul, ice turret, swarmers, child of old gods, and hellion on class ability cast. OR have an exotic be able to. Even if would be a PvE only exotic or build. Have a trade off to use all at once, don't have the ability to use melee and/or grenade to be able to summon all of them at once. Replace grenade and melee with a certain one and rest available on class ability cast.