I haven't tested
Kalonian Hydra, the trample aspect makes him look great though. Originally in the 5 drop slot I had
Thragtusk. I've only missed him once since I've made the switch. Gigantosaurus has been really good, but the Hydra with trample really makes more sense. Thanks for the heads up.
Two Trinisphere actually works quite well here. You certainly do not want to see more than one and it's meant to be dropped after you've set up your Arbor Elves and Wild Growths. I feel like two is correct.