Entangler

Wall-style blocking grafted onto a creature you choose rather than a body you draw: that is the design idea, and it cuts against the grain of how white usually solves the alpha strike. White's answer to going wide has historically been a single big blocker, a Fog effect, or a sweeper. This instead turns one of your existing creatures into a roadblock that can intercept an entire attacking force in a single combat step. The catch is the one every aura carries, doubled: you invest four mana and a card into a creature that any spot removal turns into a two-for-one, and even when the opponent obliges by attacking into it, the blocker absorbs combat damage from every creature it stops. Nothing here grants indestructible or prevents that damage, so a vanilla body soaks one swarm and dies, trading down. The card only earns its rate paired with an evasive defensive ability. First strike is the cleanest fit: against a swarm of smaller bodies the blocker can deal its damage and wipe several attackers before any of them connect. Deathtouch helps too, but the math is bounded: the blocker must assign at least one point to each creature it wants to kill, so a small body still only takes down as many attackers as it has power, deathtouch or not. In that configuration the multi-block stops being absorption and becomes a profitable mass trade. Absent that interaction, you are spending two cards to chump-block once with extra steps.