Affa Protector
A 1/4 with vigilance is a defensive statement on offense's terms: it holds the ground and still swings, which is exactly the body a board-wide team mechanic wants to lean on. The Ally tag is the load-bearing part. As a common, this is the cheap white body that fills out an Ally curve, gives the deck a creature that survives early combat without sacrificing a turn of pressure, and rewards the rally triggers other Allies bring to the table when they enter. On its own it is a wall that taxes nothing to attack with; in a tribe built to grow on every creature drop, it is a stable floor the buffs build up from. The vigilance is the small but real upgrade over a vanilla defender: it lets the soldier participate in alpha strikes that other Allies enable while never opening the door for a counterattack. Plain common-rarity tribal glue, designed for a deck that wins by going wide and tall at once rather than for any single line of play.

