Taranika, Akroan Veteran

The attack trigger is the whole design conceit: a combat effect that reads like an anthem but only fires on the swing, and it points at a creature other than Taranika herself. Because she carries vigilance, she can join the assault without tapping and still stand up to block on the crackback, so the aggression costs nothing on defense. The untap clause is what elevates this from a pump-spell-on-a-stick into an engine: aim it at a creature with a tap ability and that creature comes back online for a second activation, or untap a fresh co-attacker so it can hold the line into the next turn. The base-power-and-toughness override to 4/4 is not a bonus stacked on top of an existing body; it rewrites whatever you target, so a lowly one-drop swings as a resilient beater. The indestructible is the more consequential half: your chosen attacker survives the block and shrugs off whatever the defender throws at it. What keeps the effect honest is its reach and its clock. It names exactly one other creature, and the buff expires when the turn does, so you cannot bank the boost or turn Taranika into a standing board-wide anthem. She rewards a wide board of modest bodies over a single fatty, which is the tension at the heart of a legend that wants to attack every turn: the more targets you have to buff and untap, the more each swing pays off.