Tinker's Tote

Three mana for two bodies plus a spare permanent to cash in later is the kind of stat-distribution designers reach for when they want one card to feed several appetites at once. The two Gnome tokens are the durable part: colorless artifact creatures that register for token counts, artifact-matters payoffs, and any deck that treats small bodies as fuel rather than clock. The sacrifice line is the release valve, converting the empty artifact shell into three life once its enter trigger has done its work, which means the card never fully goes dead after the tokens have landed. That layering (a single spell resolving into a creature payoff, an artifact-count payoff, and an on-demand life buffer) is what reads as a construction piece rather than a curve-filler. The lifegain click asks for another white mana, marking it as a deliberate mid-to-late-game activation rather than something you fire off the turn it enters. Note the shape: it is the artifact itself you sacrifice, not the Gnomes, so the tokens stay on the battlefield doing whatever your board wants them for while only the housing gets spent. The density is the point: two permanents and an activated exit stapled to a modest cost, aimed at the kind of grindy white shell that wants a stream of small artifact creatures and a way to buy itself time.