@OP: I found that 4 eternities and some (5-6) time towers and the rest phase shields+mind gates+aether towers worked the best (pendulums were near-impossible to balance, didn't work well) with this strategy:
When you mindgate a pillar/tower, reverse one of his creatures at the end of your turn, then keep mindgating that pillar until you can reverse a creature and mindgate that the same turn, then spam it.