I beat Belcher, GAT, Stax, Mana Drain Painter's Servant, and lost to the new Doomsday deck running around.
Peace,
-Troy
Any more details about this match up?
I need to know how come possibility to put painter's servant + REB / Pyroblast tech into TMWA deck

Yeah, I can talk about the matchup. My deck was much faster than his. Half the deck is mana sources. I don't think he got more than 4 mana on the board in either game. Part of that might be he got mana screwed or it could be due to the light mana base he was running. Game one I dropped a Thorn of Amethyst followed by a Magus of the Moon next turn. A few turns later he had a painter's servant in play and blew up two of my permanents with his red blasts. I had him down to 6 life when he played his Grindstone, but I responded by playing Gone (Dead/Gone) on his servant, bouncing it to his hand. He didn't have enough mana left to recast the servant. The next turn I killed him with an Atog.
Game 2, I subbed in the Ingot Chewers, Red Blasts, and Pithing Needles. Turn 1 I got a needle in play set for Grindstone and that delayed him for a very long time. Turn 2, I countered his FoW with my red blasts and landed a Trinisphere. I got lucky and drew into three Tarmogoyfs. They ended up growing into 4/5's. He managed to get both combo pieces in play again, but without the mana to activate the stone. He had to block one of my goyfs with his servant to last another turn. He didn't draw another nor any way to get another into play so I won.
If I were going to try to integrate Servant-blast into my decklist, I'd probably drop the Atogs for Servants, and the Dead/Gones and Blood Moons for Red Blasts. Since my deck doesn't run a lot of search, I think Painter's Servant might be a bit of a risk to play. I'm not sure. If I played in an environment full of Flash, Oath, GAT, and TTS then I think the risk would probably be worth it. In a diverse environment or a heavy Workshop, Ichorid, R/G Beats environment the risk is probably not worth it IMO.
Peace,
-Troy