For even more budget: Overlord of the Floodpits -

Soaring Lightbringer, Midwrack Harpy, Silent Hallcreeper

Overlord of Balemurk -

Archetype of Imagination, Enduring Tenacity, Arvinox, the Mind Flail

Idyllic Tutor -

Plea for Guidance, Frantic Search, Demonic Counsel

Enlightened Tutor -

Brainstorm, Otherworldly Gaze, Ponder, Preordain

Mystic Remora -

Seal of Removal, Bottomless Pool / Locker Room, Phyrexian Reclamation, Tinybones Joins Up, Underwater Tunnel / Slimy Aquarium

Dance of the Dead -

Chthonian Nightmare, Jace’s Erasure

Rhystic Study -

Phyrexian Arena, Timely Ward, Derelict Attic / Widow's Walk, Bident of Thassa, Court of Cunning, Monologue Tax

Smothering Tithe -

Ghostly Prison, Meat Locker / Drowned Locker, Monologue Tax

Exquisite Blood -

Cramped Vents / Access Maze, Defiled Crypt / Cadaver Lab

Starfield of Nyx -

Shark Typhoon, Cemetary Tampering

The Meathook Massacre -

Damn, Time Wipe, Austere Command, Restricted Office / Lecture Hall

Hallowed Fountain, Flooded Strain, Sea of Clouds -

Temple of Enlightenment, Glacial Fortress, Adarkar Wastes, Prairie Stream, Thriving Isle

Godless Shrine, Marsh Flats, Vault of Champions -

Temple of Silence, Isolated Chapel, Caves of Koilos, Thriving Heath

Watery Grave, Polluted Delta, Morphic Pool -

Temple of Deceipt, Drowned Catacomb, Underground River, Sunken Hollow, Thriving Moor

Raffine's Tower -

Obscura Storefront, Contaminated Landscape, Evolving Wilds, Terramorphic Expanse