MTG Salvation

Do you think I should use white and Ormn's Chant so it would look something like this?
[deck= B/W Painters]
4 Painter's Servant
4 Grindstone
1 Burning Wish
4 Extripate
4 Chrome Mox
4 Unmask
4 Dark Ritual
4 Hymm To Torach
4 Ormn's Chant
4 Layline of Anticipation
4 Thought Seize
2 Layline of the Void
1 Lotus Petal
1 Mox Pearl
1 Voltaic Key
1 Time Vault
1 Mana Crypt
1 Mana Vault
1 Tezz
1 Angel's Grace 48
4 Serum Powder
1 Black Lotus
1 Misdirection
3 Pyroblast
3 Red Elemental Blast
4 Hydro Blast
1 Mox Saphire
1 Mox Ruby
4 Simian Spirit Guide

I recommend that you make room in deck #1 for 5 to 7 total red elemental blasts + pyroblasts.

REB is already good mainboard when you don't have painter's servant since it stops so many of the powerful cards in the format.

And with painter's servant,you get to name blue and take your REBs to town countering any spell or destroying any permanent while you wait to get to either the mana to activate grindstone or try to resolve it. Now, your probably thinking that it isn't hard to get to the 3 mana needed to get grindstone to combo off, but i remember many a matchup where I've either countered the grindstone or held my opponent off of 3 mana for a while.

Id remove 4 unmask for your choice of 4 duress or 4 thoughseize. Trygon predator is really powerful, so thoughtseize is probably the best choice.

Also, you might as well run time vault and voltaic key.

4 mainboard extripate seems odd in deck #2.

And with 10 free mana rocks, chalice seems odd as i can't see what number you want to run. 0 seems like itsok on the play but pretty poor on the draw considering how many you run. chalice on 1 stops grindstone- problematic if they have a way to bounce it that gets through your chalice.

Leyline of anticipation seems like a wasted 4 slots. Manamorphose will be absolutely terrible against mud and will draw mindbreak traps to your critical spells. I recommend cutting those.

The 4 blue elemental blasts in the second deck seem out of place.

Also, whats up with the lack of tinker anda big bot for it?

I would want to Tinker Tinker Tinker with the first list. Jokes aside Tinker should be in list #1 (as mentioned above). In a deck with 22 Artifacts, you should consider Mox Opal as it will be should be reasonably effective (even if you play it as a singleton). I would run a singleton Lotus Petal over any of the guides.

Your first list basically seems like an auto-scoop against a resolved Null Rod. I mean yeah, I guess you could try to play Painter's Servants with Tolarian Academy or use Guides to play other Guides, but shouldn't there at least be an Echoing Truth or some other non-artifact way to get mana?