This is the deck I run in standard right now. It needs some work, and as a fairly new MTG player (only got into it about 6 months ago), I welcome advice on it, especially for the sideboard. Thanks!
The deck started off with an idea centered around Act of Treason
+
Tymaret, the Murder King
, turning beefy creatures against your opponent and then removing them while also dealing 2 damage using Tymaret's sac ability.
Bloodsoaked Champion, Ornithopter, and Goblin Rabblemaster tokens all ensure that you have readily available sac bait all the damn time, making it pretty tough to keep Tymaret in the graveyard. The Champions especially work out nicely because you can sacrifice them and bring them back without much hassle.
Ob Nixilis, Unshackled takes full advantage of the heavy sac late game, giving the deck the momentum it needs to finish.
The counter is in mostly to protect the board from exiles, and to keep hexproofers off the board.
Eventually the deck will include full playsets of Bloodstained Mire and Polluted Delta instead of the slower dual lands, as well as Hero's Downfall to replace Silence the Believers in the mainboard, but I'm making due with what I have right now.
