Keen Duelist

Symmetry with a twist is the whole conceit: both players put a card into hand, both players lose life, but the pain each takes is metered by the other player's revealed card. That inversion is what separates this from the long line of shared-card engines that hand both sides equal advantage on equal terms. Your life total answers for what the opponent runs, not what you run, so a low-curve build hands them smaller life-loss bills while your fatter spells punish them harder. The design rewards asymmetry inside a card-advantage effect that reads as even, and it does so without the flat-tax friction that usually balances group-advantage pieces: the cost floats with the opponent's deck rather than sitting fixed. The upkeep timing matters too, since it resolves before your draw step and forces you to yoke a specific opponent before you have seen your own reveal. Because it puts the top card into hand rather than drawing it, the effect sidesteps draw-replacement and draw-punishment triggers entirely, which quietly changes how it slots against certain lock pieces. On a fragile 2/2 body the engine is exposed, asking to be protected rather than deployed and forgotten, and that vulnerability keeps the value from spiraling. It sits in the heirs-of-Howling-Mine tradition of two-way engines, reframed as a duel: you are betting your library's contents against theirs, turn after turn, and the loser of that bet bleeds.