Javelin of Lightning

Equipment usually asks for a two-step commitment: cast it now, pay the equip cost later, then finally attack. Flash plus a free attach on entry collapses that into a single motion, but the "during your turn" clause quietly decides what kind of motion it can be. This is a purely offensive tool. Flash it in on your own turn to hand an attacker +2/+0 and first strike, and a modest creature suddenly beats a much larger blocker outright or forces a trade the defender never wanted. On the opponent's turn it grants nothing: no bonus, no first strike, no help when you are the one being swung at. That asymmetry is what keeps a two-mana flash equipment from being a blowout in both directions. The equip cost is punishing by design, discouraging you from ferrying the weapon around freely once its first bearer dies; the intended pattern is to deploy it on the right creature at the right attack step and cash in that first attach rather than treat it as a portable, reusable enhancement. First strike is the part that scales, letting an ordinary body punch through creatures it has no business beating on raw stats. It is combat-trick thinking wearing the durability of an artifact: cheap to cast, expensive to relocate, and dangerous only when you are the aggressor.