Run and hide because the flying trample hydras are coming!
The killing machines themselves:
Kalonian Hydra: this beast of a creature will multiply your already deadly hydras
Managorger Hydra: drop it early and watch it grow!
Hooded Hydra: becomes an army of snakes upon death and even comes with its own easy two-payment plan
Help the Hydras!:
Abzan Falconer
: because the only thing worse than a 20/20 Kalonian Hydra is one with flying! Also capable of building up power over time and giving himself flying with outlast.
Tuskguard Captain
: basically
Abzan Falconer
but provides trample instead
Solidarity of Heroes: multiply all of your hydras!
Dromoka's Command: Allows your powerful hydras to remove enemy threats as well as stop them from annihilating your with instants or sorceries
Ramp:
Elvish Mystic + Llanowar Elves
: easy ramp starting on turn 1
Nissa's Pilgrimage
: keeps your hand supplied with forests and puts 1 out at the same time
Everything else:
Avatar of the Resolute: too good not to use with all of the hydras and outlast creatures
Elvish Visionary: Helps you cycle and find the cards you need
Overall I believe this deck has potential when played correctly, and please leave comments and suggestions below. Advice is always welcome.