Oh my goodness. With lvl 1 recharge only costing 6 these two are nuts together. Of course if you havea solid lvl ragnarok, this would be even more insane.
Basically> collect 6 yellow, use recharge. While the count downs are up collect 3 red. When the countdowns are over, use hammer twice. This should net you 3-6 yellow. Rinse and repeat this prosses.
As mentioned, with a high lvl ragnarok, this would border on riddiculous, but it would lack the yellow generation.
Thus, it would probably be more effective with thor.