Heroic Defiance

One of an early-era cycle of color-conditional Auras whose effect keyed off the most common color among all permanents, this is the white entry, and it inverts the usual aura math in a way few have. The size of the bonus is not yours to set: it is a flat +3/+3 or nothing, switched on or off by what the whole board looks like rather than by anything you control. Enchant a creature whose color is scarce on the table and you get the full swing; enchant one that shares a color with the plurality and the aura does nothing, leaving you down a card on a dead target. Because the static ability reads the enchanted creature's color and not your deck's, you can still get the full bonus on an off-color creature even when white is the plurality out: the spell punishes the body that matches the most common color, not the white player. That continuous board check is the entire pricing mechanism. A two-mana +3/+3 from an Aura is an aggressive rate, generous enough that ordinary aura card disadvantage would not have kept it honest, so the design instead taxed the upside against a condition you usually cannot guarantee, and against the sorcery-speed commitment of casting an Aura with no flash. The result is a puzzle wearing a pump spell's clothes: the question is not whether your creature wins combat, but whether the spell functions at all, and the answer shifts every time a permanent enters or leaves.