I love this deck but i would replace the 2 Prey Upon s for full playsets of Wild Defiance and Pendelhaven s. or maybe another Giant Growth . anyway Prey upon doesn't seem like it belongs in this deck. You have weak creatures and you don't want to waste your power ups E.G. Giant Growth on killing a creature which you have to do to used Prey Upon . a Giant Growth is 3 damage to a creature but (basically) 6 damage to a player. It just hits a player harder in infect. prey upon just seems like a waste of a mana that could be used to kill a player. Also consider adding 2 more creatures with the 2 openings Glistener Elf maybe?

sorry not Glistener Elf XD card:Prey's Vengeance might work

Looks great! I love the cheap creatures and fast take down.

I would also look into using some Might of the Masses in place of some of the other power ups. With your cheap creatures, you would have no problem having 3 or more creatures in play.

@rockoe10 After playtesting this for a while on Cockatrice I have barely ever had more than 1 Creature Out at once so it would be acting as a weaker Giant Growth