I recently made a gravity/time controller and stumbled on this board. I'm only level 14, but slotted the overpowering presence energy font proc into crushing field and the energy font seems to come up pretty regularly with large mobs. I've spamned Crushing Field and have gotten as many as 3 energy fonts out at one time. I've also slotted Debilitating Action: chance to stun and Overwhelming Force: chance of knockdown. Between the 3 procs, I've essentially turned my AoE Immobilize into a poor man's AoE hold. I know you're not big on Crushing Field, but considering how quickly it recharges and the number of people it affects, I think it's preferable to take both Cushing Field and Dimension Shift, dropping Crush.