I would think the maximum value would be whatever the game allows or infinite really. You'd just need (at least) 1 condor, 1 aflatoxin, 1 otyugh, 2 eternities, 1 flying weapon, 1 something to use aflatoxin on, 1 something to eternity on for yourself not to deck out, some constant healing to make sure you don't die from the 1 creature of the opponent's that you use eternity on, and towers to get the necessary quanta (especially time) to make sure your opponent and yourself doesn't deck out. There might be other ways....