Pearlspear Courier

Locking yourself down to pump a teammate is an unusual price, and that price is what defines this card. The vigilance-and-buff effect persists only "for as long as this creature remains tapped," so the courier turns itself into a permanent anchor: tap once, choose not to untap, and one Soldier carries a standing +2/+2 with vigilance while the courier sits there contributing nothing to combat itself. That tradeoff makes it a tribal lord that pays for its lordship one investment at a time rather than passively, the inverse of how anthem effects usually work. Onslaught's Soldier theme leaned on this kind of marginal, build-around engine: small white bodies that mattered in aggregate and rewarded a board already wide enough to make a single buffed attacker decisive. The vigilance rider is the underrated half, since a vigilant +2/+2 attacker keeps a wall up at home, partly offsetting the courier's own absence from defense. It is a card built entirely around the friction of its own activation, asking you to weigh whether locking down a 2/1 to overload a single Soldier is worth more than another body in the line.