FUGU
1x Swamp
1x Forest
2x Ice Floe
4x Bayou
2x Pine Barrens
2x City of Brass
4x Undiscovered Paradise
4x Gemstone Mine
2x Dark Ritual
2x Squandered Resources
4x Unearth (potential sub/dupe: Phyrexian Reclamation)
3x Bone Harvest
4x Terror
4x Diabolical Edict
3x Word of Binding
4x Skyshaper
4x Suq'Ata Assassin
4x Pit Scorpion
4x Swamp Mosquito
4x Sabertooth Cobra
4x Marsh Viper
I know- its more than 60 cards. That's typical of my designs, and was seldom an issue when I played.
In this deck's case, it only needs a few critters to get out and stay out- much of it is about either killing your opponent's creatures or making several of yours unblockable all at the same time. Skyshaper is just ugly in here- its cheap and it gives you a full round of flying poisoners.
In the meantime, Bone Harvest, Unearth and/or Phyrexian Reclamation, if you use it ensure that your opponent will have difficulty stripping you of all your poisoners.
While more expensive, a couple of hits from a Marsh Viper will really make your opponents sweat- see Skyshaper.
Tweek or raid to your heart's content.