Overframe is missing the built in stance mod that adds +10 capacity, so the empty slot is for any max rank elemental damage mod. The crit and status chance are also incorrect, they should be 5% each.
Since base crit and status chance are so low, there's no reason to try and build this for innate status/crit, instead we force crits with Wrathful Advance, and crank crit damage with purple archon shards.
Arcanes
Most arcanes don't work with [Shadow Clones], so Melee Exposure is our pick. Melee Crescendo is an option, but it's much easier to get and keep combo up with just Rising Storm on Ash.
Mods
- Melee Elementalist - Shadow clones apply a slash status, so upping the damage for very tanky enemies is a big gain, but not necessary for most enemies.
- Element damage mods - The actual damage type is irrelevant, since it's a finisher, so we use the biggest we have: Primed Fever Strike
- Spoiled Strike - A simple +100% melee damage
- Covert Lethality and Finishing Touch - required finisher damage
- Primed Pressure Point - +Base damage
- Primed Fury - Very nice to have for clearing lots of enemies, [Berserker Fury] doesn't proc, so we use this instead.