Otherwise, I guess Sneak Attack is out of your budget?
If you want to play big 4-6cc spells that cheat out creatures, you probably want to play BIG mana acceleration like Ancient Tomb and friends. Or you could try to cast Summoner's Pact for 0 if you play smaller green creatures. Unfortunately just using Spirit Guides and Lotus Petals isn't enough to help you consistently cast 5-6 mana spells, and your deck does almost nothing until you cast one of those big spells. So you need mana acceleration and/or a different engine.
3 Dramatic Entrance
4 Summoning Trap
3 Lure of Prey
4 Through the Breach
3 Terastodon
3 Worldspine Wurm
3 Progenitus
3 Emrakul, the Aeons Torn
2 Myojin of Life's Web
14 Forest
4 Wooded Foothills
2 Mountain
4 Lotus Petal
4 Elvish Spirit Guide
4 Simian Spirit Guide
SB: 3 Choke
SB: 3 Blood Moon
SB: 4 Autumn's Veil
SB: 2 Vexing Shusher
SB: 3 Red Elemental Blast
4 Chancellor of the Annex
4 Chancellor of the Tangle
4 Worldspine Wurm
4 Terastodon
4 Ashen Rider
3 Emrakul, the Aeons Torn
3 Progenitus
4 Violent Outburst
4 Shardless Agent
2 Demonic Dread
2 Hypergenesis
//Mana: 22
4 Simian Spirit Guide
4 Elvish Spirit Guide
2 Mana Confluence
4 Gemstone Mine
4 City of Brass
4 Forbidden Orchard
Otherwise, I guess Sneak Attack is out of your budget?
If you want to play big 4-6cc spells that cheat out creatures, you probably want to play BIG mana acceleration like Ancient Tomb and friends. Or you could try to cast Summoner's Pact for 0 if you play smaller green creatures. Unfortunately just using Spirit Guides and Lotus Petals isn't enough to help you consistently cast 5-6 mana spells, and your deck does almost nothing until you cast one of those big spells. So you need mana acceleration and/or a different engine.
What about an Elves engine?
4 Elvish Mystic
4 Llanowar Elves
4 Joraga Treespeaker
4 Quirion Ranger
4 Elvish Visionary
4 Priest of Titania
4 Elvish Archdruid
1 Deranged Hermit
1 Craterhoof Behemoth
1 Terastodon
1 Progenitus
//Search: 10
4 Green Sun's Zenith
3 Chord of Calling
3 Natural Order
1 Dryad Arbor
18 Forest