Tajic, Blade of the Legion

Indestructibility on a four-mana 2/2 is a strange place to spend a guild's namesake, but it is the whole logic of the card. A vanilla 2/2 dies to everything; an indestructible one survives combat against anything bigger and shrugs off burn aimed at the red zone, which means once it lands it tends to stay landed, attacking every turn the rest of the team can keep pace. Battalion is the payoff: the moment three creatures swing together, the static 2/2 becomes a 7/7 that walks through double-blocks and damage-based removal alike. The two abilities cover each other's gaps with unusual precision. Indestructible answers how a small body survives long enough to matter; battalion answers what it does once it has. The price is the trigger condition itself: drop below two attacking allies and the card reverts to a 2/2 that swings for almost nothing, and the indestructibility offers no protection against sacrifice effects or anything that drives toughness to zero. It rewards a wide, committed assault and punishes the cautious top-deck, which is precisely the aggressive posture the red-white color pair was built to embody. As a curve-topper for a go-wide board, it asks you to keep bodies coming rather than play around removal, since the creature it is attached to laughs off most of what removal does in the red zone.