Haunting Figment

A spells-matter payoff wearing a beater's clothes. The condition is broad in a way most evasion riders aren't: any instant or sorcery cast this turn, no color requirement, no minimum mana value, no "noncreature" carve-out beyond the two spell types themselves. Cast a cantrip, a burn spell, a counterspell you were holding up anyway, and the body becomes unblockable for the turn. That flexibility makes the card a signal about the shell it belongs in rather than a self-contained threat: it does nothing special alongside a pile of creatures and everything you'd want in a build that was already going to cast a spell each turn. Vigilance is the piece that lets the two halves of a tempo plan coexist. On the turns you cast a spell and swing in, the creature comes back untapped, so pressing damage on the beatdown turns still leaves a blocker for the crackback. That matters most for a deck holding up interaction: it can attack to keep the clock running without surrendering the board when the opponent turns the corner. The evasion and the vigilance point at the same job from opposite ends, an attacker that stays a defender, built for the archetype that treats its creatures as clocks and rewards the spells it was casting anyway.