Really like this deck, especially the budget price. +1

You can't regenerate Augur of Skulls after you sacrifice him. Regenerate only pertains to lethal damage and destroy effects, while sacrificing is neither. Check out this rules discussion link.

Why not Breaking // Entering?

TheAnnihilator you are correct. Straight from the official rule book:701.14. Sacrifice701.14a To sacrifice a permanent, its controller moves it from the battlefield directly to its owners graveyard. A player cant sacrifice something that isnt a permanent, or something thats a permanent he or she doesnt control. Sacrificing a permanent doesnt destroy it, so regeneration or other effects that replace destruction cant affect this action.Thanks for pointing that out. I will likely swap him out for Wall of Tears now.