Bilious Skulldweller

The pairing does the whole strategic job: deathtouch turns any block or trade into a lethal exchange, while toxic 1 means every connecting hit also advances the poison clock. A defender who lets it through eats a poison counter; a defender who blocks the 1/1 loses a creature to deathtouch. That is a genuine bind at one mana, and it is why the poison axis rewards small evasive bodies more than raw power: the number on the card matters less than the fact that the damage connected at all. Ten poison counters end the game regardless of the life total, so a cheap source that adds one per hit and punishes blocks is exactly the incremental floor the mechanic was rebuilt around in its modern form. Infect tied the poison rate directly to a creature's power, dealing all its combat damage as poison and warping combat math around pumped, unblockable threats. Toxic decouples the two numbers: normal combat damage still comes off the life total, and the poison counters arrive on a separate, fixed dial that designers can meter independently. A one-drop paying toxic 1 is the lowest setting on that dial. It does not close games on its own, and it is not built to: it is the early drop that keeps the count ticking while the deck assembles the pieces that actually cross the finish line.