Silvergill Peddler

Most loot effects on a creature are stapled to combat: turn it sideways, filter a card. Keying the trigger to becoming tapped rather than to declaring an attack widens the outlet enormously. Convoke, crew, mana abilities, and the dozens of designs that ask a creature to tap for a cost all become ways to fire it, each one drawing a card and pitching one to sculpt the hand. Turn it sideways for a card; tap it to pay a Merfolk lord's activation for a card; tap it to power out any tap-outlet you happen to run. The 2/3 body earns its keep by surviving incidental damage and holding ground while it sits ready to be tapped again, so a stray point of reach does not evaporate the whole engine. The loot pattern (draw, then discard) is the restraint built into the effect: net-neutral on raw card count, so it filters toward what you need rather than snowballing advantage. The payoff scales precisely with how many tapping outlets surround it, which turns an otherwise plain three-drop into an engine that rewards a board built to grind and interact rather than one built for a single explosive turn.