Youthful Valkyrie

A payoff wearing a common's clothes. The 1/3 flier is deliberately unthreatening on its own: a blocker, a point of chip damage, nothing that pressures a board by itself. What it wants is quantity, and specifically quantity of a single creature type, gaining a counter each time a fellow Angel arrives. That single-type requirement runs against the tribe's own instincts. Angels are traditionally white's late-curve haymakers, cast one per turn, so a card asking you to deploy them in bulk is fighting the shape of the tribe it belongs to. To keep the counters flowing you have to reach for the cheaper Angels and the token-makers that produce them, converting a lineage built around individually powerful bombs into a go-wide engine. The accumulation is permanent and stacks with every trigger, so a Youthful Valkyrie left standing in an Angel-dense board does not stay young for long. Its design asks Angels to be what they rarely get to be: not a sequence of expensive threats spent one at a time, but a critical mass deployed fast enough that the second-cheapest creature on the table is also quietly the largest.