Augur of Skulls

The discard half is sold at a steep tax, and not the one the rate suggests: forcing an opponent to pitch two cards reads as backbreaking until you notice it costs you the creature outright and can only happen during your own upkeep. This is Mind Rot delivered by sacrifice, a one-shot wired into a body rather than a recurring engine. The timing clause does most of the constraining. You announce the threat a full turn early by leaving the Skeleton on the board, so the opponent gets to replan around it: dump a card they were holding, hold up an answer, or simply attack into a creature that no longer matters to them once the discard fires. The regeneration ability is the quieter half, and it cuts against the obvious read. It does nothing to keep the creature alive through its own sacrifice cost (regeneration replaces destruction, not the act of being sacrificed), so it is purely insurance for the waiting period: a 1/1 that wants to block, trade, or chump until your upkeep arrives needs to survive removal in the meantime, and the cheap shield buys that patience. What you are really paying for is the option to deploy a creature now and hold a guaranteed two-card strip in reserve, redeemable exactly once, on a clock the opponent can see coming. It belongs to the older school of black disruption that treats hand denial as a slow grind rather than a tempo swing.