Infectious Bloodlust

The aggressive aura's oldest liability is that it stacks two cards on one body: when the creature dies, both go with it, and the tempo you spent evaporates. Decades of design have chipped at that two-for-one exposure in various ways. The fix here is to bake recursion into the aura's own text: lose the enchanted creature, tutor the next copy from your library, keep the pressure rolling. A deck running four copies turns a swarm of small attackers into a chain of buffs, each dead creature drawing the next enchantment when removal or a chump block clears the board. The +2/+1, haste, and forced attack are unremarkable on their own; the search clause is what changes how you build around it, rewarding a wide base where every body is an interchangeable launch pad for the same aura. The tradeoff for that resilience is the compulsory attack, which can walk a fragile creature into a bad trade and hand the recursion right back to you before you wanted it. It is a small, sharp piece of design that solves the aura's structural problem without printing a stronger aura: it just makes losing the first one part of the plan.