Kassandra, Eagle Bearer

A tutor bolted onto a body, but the target is fixed: this fetches exactly one card, The Spear of Leonidas, from anywhere it might be hiding (graveyard, hand, or library) and puts it straight onto the battlefield. That specificity is the whole engineering trick. Rather than let the enters-the-battlefield trigger dig for any equipment, the design hard-codes the pairing, so the payoff and the enabler always arrive together and the third ability has something to reward immediately. Haste means the assembled package can swing the turn it lands, and the draw trigger keys off legendary Equipment specifically, gating the card advantage behind a narrow band of gear rather than letting any generic sword print cards. The result is a self-contained aggro engine that reads like a two-card combo compressed into one creature plus its guaranteed toolbox: the search stitches the pieces together, the equipment turns combat damage into cards, and the whole loop asks you to attack rather than durdle. It is a compact statement about how to make a build-around that never whiffs, because the piece it needs to function comes attached to its own tutor.