Here what I would change

• 1 Plains, + Sandstone Oracle (card draw, extra sanctum trigger)
• 1 Plains, + Terramorphic Expanse (filter)
• Burst of energy, + Rings of Brightheart (OPOPOP)
• alligned Hedron Network, + Land Tax (major filter)
• Blight Herder, + Scroll Rack (card filter)
• Glimmerpoint Stag, + Weathered Wayfarer (filter/advantage/land trigger)
• Revoke Existence, + Return to Dust (just a better card being 2-4-1)
• Thought-Knot Seer, + Academy Rector (one of the best white tutors)
• Mind Stone, + Aven Mindcensor (gread tutor hate)
• Veldalken Orrery, + Austere Command (one of the best wraths)
• Pilgrim's Eye, + Linvla Keeper of Silence (great disruption card)

@Ironglace,

thanks, Return to dust is better indeed, haven't thought of that one. Also a good argument on the sandstone oracle, didn't see that.

When the cards I ordered arrive I'll definitely make the changes.

thanks :D