Sinister Monolith

Passive drain artifacts are an old idea, cheap incremental engines that ask you to leave them on the table and wait for the life totals to swing. What this one adds is an exit ramp with a price already denominated in life. The combat-step trigger nets you a life every turn, and the crack-for-cards mode spends two of your own to draw two, so the artifact effectively banks the life it earns you and lets you cash it back out as cards later. Timing sets the rhythm: the draw is sorcery-speed and requires the tap symbol, so you cannot flash it in as an instant-speed refuel on an opponent's end step. But the two modes are not mutually exclusive on a turn. The drain fires at the beginning of combat, and the sacrifice can follow in your post-combat main phase, so a single turn can both tick a life off your opponent and convert the artifact into cards. That makes it a self-contained little engine: it starts as a clock, sitting on the battlefield accumulating value, and ends as a burst of cards the turn the aggression runs dry. Nothing here is flashy, but the loop is closed and honest: every point of life it gives you is a point it can ask for back.