Davriel, Rogue Shadowmage

The cheapest of the mono-mechanic Davriels and the one that commits hardest to a single job: emptying the opposing hand and punishing what remains. The upkeep trigger is the interesting part, because it inverts the usual planeswalker economy. Most three-mana walkers spend loyalty to affect the board; this one does its damage without ticking at all, checking each opponent's upkeep and burning them for two whenever they are down to one card or fewer. The minus is not defense, it is fuel: every discard nudges a player toward the depleted hand that turns the trigger into a repeating clock. The tension is that discard wears out against most opponents, so the loyalty ability eventually hits a wall while the trigger keeps firing, which is exactly why the card wants to arrive alongside other hand attack rather than carrying the plan alone. What it does not do is protect itself, and that is the constraint that keeps a three-loyalty walker at this price from being oppressive: it demands a deck already built to strip cards and grind tempo, rewarding that deck with inevitability rather than immediate impact. As a design it is a compact statement about hand size as a pressure axis, welding a permanent that empties the opposing hand to a low-hand punisher in the lineage of The Rack and Shrieking Affliction, so the walker both causes the condition and cashes in on it.