Alright, I'm still looking towards building Painter's Stone, but specifically a (looks up the Apocalypse-volvers) Imperial Raka list with a five-card Bomberman as a back-up combo. The goal with the back-up is to assemble the Painter's Stone combo as normal, then mill myself to put all five Bomberman pieces into my yard. Use Unburial Rites to return Auriok Salvagers, start generating infinite mana with LED, then proceed to use Conjurer's Bauble once to effectively return Laboratory Maniac to my hand, cast Laboratory Maniac, then use Conjurer's Bauble one more time to draw nothing and win via Laboratory Maniac's replacement effect.

My issue however is that 3-mana to activate grind stone followed by an additional 4-mana to flashback Unburial Rites on the same turn is probably too little too late against what the back-up is aiming to fight--the original Eldrazi Titans in Enchantress, Show-and-Tell decks, 12-post, Eldrazi Stompy, Four Horsemen, etc. Also, opting for the Pyrite Spellbomb route still prevents me from winning against Leyline of Sanctity while still presenting the same problem of how to return Auriok Salvagers to the battlefield.

Any suggestions? Only two things I can thing of are Goblin Welder with God-Pharoh's Gift, and Dread Return with 3x Narcomoeba: the former requires Goblin Welder to be active, and the later requires and extra three slots dedicated to a back-up plan.

4 Painter's Servant
4 Grindstone
1 Lion's Eye Diamond
1 Auriok Salvagers
1 Conjurer's Bauble
1 Laboratory Maniac
1 Unburial Rites
4 Imperial Recruiter
3 Goblin Welder
1 Trinket Mage
4 Force of Will
3 Pyroblast
4 Swords to Plowshares
4 Brainstorm
4 Ponder
1 Academy Ruins
1 Volcanic Island
1 Tundra
1 Plateau
1 Arid Mesa
4 Scalding Tarn
4 Flooded Strand
1 Plains
2 Mountain
4 Island