Where is the synergy between them, sure Devour and Bleak watcher works, but that's about it. Honestly the whole kit feels bland and weak compared to it's other counter parts, I don't ever feel that Prismatic can do anything better than any other subclass. Along with the worst super options.
Don't get me wrong, it's a fun fantasy, but all it's got going for it is transcendence. The combos of aspects don't perform better than anything any default subclass can perform. A perfect example is the strand aspect and grenade, without the Thread of Evolution from Strand itself threadlings are pretty weak.
Just the rantings of an up jumped Warlock who doesn't play any other class. I'd honestly love to see this whole Prismatic kit see a reprise in the future along side Titan's too melee centric setup to balance with their tank fantasy.
Aspect's to replace: The warlock kit should be more focused on the regeneration of abilities playing into their wizard fantasy.
Void - Child of the old gods - Life steal abilities and health from targets, recharging your abilities over time
Solar - Heat Rises - Gives the airborne combat and the ability to recharge ones melee charges
Arc - Electrostatic mind - Plays into the whole spell caster fantasy of the warlock better than Devour with just grenades.
Stasis - Frostpulse - Just for the desire to Phoenix Dive with Weaver's call to freeze then shatter with threadlings
Strand - Weaver's call - Yes this is the only one I'd keep the same