Obsessive Skinner

Delirium mostly paid out in one-shot bursts: a static bump when the graveyard hit the threshold, or a single reward that fired and then went quiet. This one is a metronome. Once your bin holds enough variety to switch on the ability, it drips a +1/+1 counter onto a target at the start of every opponent's upkeep, an engine that keeps producing rather than paying once. The timing is the sharp part: because it fires on their turn, not yours, the counter lands before their combat step, letting you size up a blocker ahead of an attack rather than pad your own swing. The body offers nothing to the clock by itself; the enters-the-battlefield counter is a single deposit, after which the creature is a fragile 1/1 babysitting a machine that only runs when the graveyard stays stocked. That conditionality is the price. A counter-per-turn engine stapled to a two-drop would be indefensible without the gate, and the gate demands a deck built deliberately to hit its threshold, not one that trips into it. It rewards synergy that has to be constructed on purpose, which is why it reads far better inside a dedicated +1/+1-counters shell than as a generic value creature you jam for the body.