Sivvi's Valor

The redirection is the simple part: reroute every point of damage aimed at one creature into your own life total, turning a one-sided block or a burn spell into a survivable trade. The cost is where the design lives. The alternative payment, tapping an untapped creature you control while you hold a Plains, lets you fire this off for nothing more than a body's combat availability. That is the creature-economy design language of its era brought to a trick: spells that bend the curve by spending the battlefield instead of the manabase, so a deck flooded with creatures can hold up interaction without ever leaving white mana open. The choice is the whole tension. Pay the mana and keep every creature ready to attack or block, or tap one and free your lands, betting the creature you commit was worth less tapped than the mana was untapped. It is damage deflection priced in tempo rather than cards. The free-cast option only matters when you have a body you are willing to lock down for the turn, which is exactly what stops it from being a strictly free play. And nothing goes to the graveyard for the cost: you keep the creature, you just surrender its attack or block until it untaps on your next turn.