Megumo Ten Shadows

Shadow Efficiency is a simple but very strong damage buff that can be essentially permanent if you stack it properly.

Megumo becomes a DPS freak once the unit enters the Chimera Sovereign. And, given the short cooldown, that will be 50% of the time.

The Domain Refinement passive is exceptionally strong as anti-boss tech. It not only deals massive damage but also significantly reduces the target's damage output for 6 seconds (20% reduction).

Megumo's active ability summons General Moharoga, who is an insanely powerful unit on his own, deals a lot of damage, and has his own set of powerful passives.

A fairly simple unit focused purely on DPS, without offering any notable utility.