Stormbeacon Blade

The +3/+0 is the invoice; the card draw is what you're actually buying, and it's priced to a condition that only a going-wide board can meet. Three or more attackers is a real threshold: it asks you to commit the team, not just the equipped creature, and it rewards the exact deck that a cheap power-boosting Equipment already wants to be in. Most aggressive Equipment stalls out the moment the opponent stabilizes, because a single suited-up attacker gets chumped or removed and the card economy collapses. Here the same board state that pushes the most damage also refills your hand, so the tool that makes you aggressive also keeps you from running out of gas. The +3/+0 pushes a creature into the range where it demands a block or a big life swing, and every turn that pressure holds, another card arrives. The equip cost keeps it honest at the deployment layer: attaching is a sorcery-speed commitment, so you cannot flash the buff onto a surprise attacker or reattach mid-combat to dodge a block, which stops the draw trigger from being free every turn. The result is a low-rarity aggro payoff built around a swarm you were already planning to assemble, turning the width of your board into a resource rather than just a clock.