I have him at +8 defense and health route, with a mana troop lvl13 does 182 per round.
I use him with Zimkitha in 3-2 formation, combined they are a sturdy Swiss Army knife with decent damage to all at fast speed. If you fire them twice which happens often they can put the whole enemy team in serious trouble.
Against tougher teams with green tank I play him in mono with the following formation:
The added crit to tiles plus the other buffs/debuffs Works great and Lancelot makes him and zim fire again faster
Other than that I like him with proteus+victor too, their dots stack for very nice numbers, specially on victor’s victims (182JF+128Prot+198Vict=508 Max per round on single target with my current stats) Working on a second proteus and vela to add them to a DoT squad. I’ll report back when I have them ready (scopes have become elusive)