Sharena build

I run Fury and Drag Back on her. She's usually partnered with my Nino - buffing up the blade tome, guarding aganist reds, and dragging targets back into nuke range.

Triangle adept+lancebreaker works really well for me

I run fury and swordbreaker, as her role on my team is to kill sword units. She also functions as a psuedo buffer for my Nino with Fortify Def, Rally Attack, and the Fortify Res seal.

Quick Riposte works pretty well on her.

I went with a debuff build given Fensalir's effect with Seal Speed and Threaten Res. A slot is flexible.

This is not her optimal build but I typically run Azura as well, so I don't need Sharena to carry my team on offense. The debuff build is fun and feels right for her base kit.