Magma is in my team and I am #1 everyday at payout, seldom out of top 10 overnight. His 15k protection is tough to break and he never misses with TM reduction. Damage is low but he does crit on QGJ assist often double hitting which is great with all the foresight teams. I use RG too so he gets health bonus.
I'm pondering switching for 5's though as he is almost Gear 9 and tho damage may be same I think the assist and counter may be more useful when the omega skill kicks in for his basic.