Wutan ; 2 counter+def unit / 2 critical / 1 debuff / 1 dodge / 1 atk

If you still want to do activation build this 2 can help.

Royal Water Lily has def buff.
Streptocarpus has critical buff.
They both can boost 2x activation rate if got hit (shielding also count as got hit).
You can set provoke on them and let your girls show off they skill.

By the way don't want to choose your waifu?