Which Mystic to 7* Rank 2?

Hoitado

I’ve completed All Story Content so far and have Explored Acts 8 & 9 and am mainly looking for a Battlegrounds Rank Up Option.
Thank you.

Beerus2Strong

I don't have him but he can do insane amounts of damage whereas my 7 star Wolf has not impressed me yet or perhaps it's his basic attacks I'm not a fan of.

Wolf, Deathstrike, Okoye all have basics that make me not want to use them although Okoye's insane damage output is appreciated