Skeleton Key

Skulk is the mechanic doing the load-bearing work here: it locks out any creature with greater power from blocking, so a slim attacker slides past the fat bodies an opponent would normally throw in its way. The filter is by power alone, though, not by presence. A one-power creature carrying the key still bounces off 1/1 tokens, 0/4 walls, and anything else whose power sits at or below its own, so the equipment rewards an attacker the opponent has no cheap chump to trade with rather than promising a clean connection. That is the entire arrangement. One mana down, two to strap on, light enough to sit on an early evasive threat, and the combat-damage trigger converts every unblocked swing into a draw-and-discard that smooths the hand while the clock ticks. The discard half reads as a cost but works as a supply line: it loads the graveyard for whatever prefers cards in the bin (escape, flashback, delve, threshold), turning what looks like a tax into fuel. So the package asks for two things that seldom share a single one-mana slot: evasive aggression and graveyard density, and it pays out only when you commit to both. The skulk math is the balancing hinge, scaling with the relative power of the bodies across the board, which is why the key wants a lean, slippery threat rather than your heaviest one.