I agree with superdude6 that you need more creatures and fewer spells. 30 creatures, 8 spells, 22 land is a good place to be although there is no need to be exact. I would suggest replacing
Channeler Initiate with
Exemplar of Strength; the extra point of power is a good thing, tapping for mana means not attacking that turn, it still accepts the counters from the crocodiles and it never hurts to gain some life for no mana.
Resilient Khenra is another very strong pick for a 2 drop.