Is it worth 6 star 2 Coldhearts?
I have been lucky to get 2 coldhearts (CH) recently (having done all the auto 20 and arbiter missions without CH in a very painful and slow way).
I 6* my first CH and she is amazing (a bit squishy) - 1.2m A3.
My question is:
1. Is it worth having 2 for faster auto dungeon20 runs (especially Spider and FK)?
2. Do their 2 AIs work well together? I don't want them firing their A3 in same round.
3. Following from 2. - Do I need to build them differently (one much faster than other?)
4. Is there still a place for Royal Guard?
Thanks