I like your idea because it’s relatively the same as EoT but differs slightly enough to work, but if you don’t think that’s good enough or “exotically”, I would say make it the Rocket Version of the Grand Overture X amount of kills lets you convert the Micro Missiles into a Giant Rocket (nothing comically big just big enough to know the difference) which Deals HEAVY Dmg wherever it’s impacted leaves basically an amped up pulse grenade contending with DB or something similar to Deathbringer where it’s a ball that goes a certain distance stops and it shoots out a lot of Micro Missiles in a certain radius making it a contender for Ad Clearing, or maybe a hybrid route keep the Heavy Dmg but not as big (Grand Overture part) wherever it’s impacted it shoots out a lot of Micro Missiles in a certain radius making it a hybrid of DB and EoT. But I honestly like your idea it’s plain and simple nothing to crazy.

And then there’s Truth… [spoiler]he’s dead[/spoiler]