Nim Shrieker

An evasive payoff built on the cleanest version of the affinity-era idea that your artifact count could be a creature's power. The 0/1 base is deliberate: this thing is nothing on an empty table, a flyer with nowhere worth going until the artifacts pile up. The conversion rate is what sells it, since every artifact you control adds a full point of power and none of it touches toughness, so the card scales as a glass cannon that hits hard through the air while staying trivially easy to kill in combat or trade off to a single ping. It rewards going wide on cheap artifacts rather than deep on expensive ones: ten one-mana trinkets make it a 10/1, which is the whole appeal and the whole liability in one line. Crucially, artifact lands count too, so the affinity-era manabase that turned lands into artifacts also feeds this body directly, blurring the usual line between your mana and your stats. The block's other count-the-permanents creatures (Frogmite, Myr Enforcer) wanted artifact density to cut their cost; this wants the density to be its body. A 0/1 flyer that turns a board of artifacts into an evasive clock is a tidy expression of how thoroughly that era let artifacts stand in for raw power.