You could build a reasonable Oath of Druids deck that wouldn't break the bank. Oath of Druids is under $2 and Forbidden Orchard is around $7. Most of the rest of the deck is pretty much legacy staples and you can customize the list to the cards you have access to.
Here's an example that assumes you have Force of Wills, duals, and fetches.
2 Flooded Strand
4 Forbidden Orchard
1 Forest
1 Island
1 Misty Rainforest
2 Polluted Delta
2 Scalding Tarn
1 Strip Mine
2 Tropical Island
2 Volcanic Island
1 Ancient Grudge
1 Arlinn Kord
1 Brainstorm
1 Chain of Vapor
1 Dack Fayden
1 Damping Sphere
1 Deep Analysis
1 Dig Through Time
1 Fire / Ice
2 Flusterstorm
4 Force of Will
1 Gitaxian Probe
1 Griselbrand
1 Gush
1 Hurkyl's Recall
2 Inferno Titan
1 Izzet Charm
1 Jace, the Mind Sculptor
4 Mental Misstep
1 Merchant Scroll
1 Mindbreak Trap
1 Nissa, Steward of Elements
4 Oath of Druids
1 Ponder
4 Preordain
1 Pyroblast
1 Sylvan Library
1 Treasure Cruise
Sideboard:
2 Ancient Grudge
1 Carnage Tyrant
1 Damping Sphere
1 Firespout
1 Hurkyl's Recall
1 Nature's Claim
1 Null Rod
1 Pyroblast
1 Relic of Progenitus
1 Sorceress Spyglass
1 Thrun, the Last Troll
3 Tormod's Crypt
Note: It might need more lands - I just compiled a list based on cards that see play in this kind of deck.