Nurturing Presence

The buff doesn't live on the Aura; it lives on the enchanted creature, as a granted trigger that fires whenever a creature you control enters. So this doesn't pump a body once. It grafts a repeatable go-wide payoff onto whatever it lands on, and the host balloons in proportion to how many creatures you can chain into a single turn. The 1/1 flying Spirit that arrives with the enchantment does double duty: it hands you a spare evasive body and it counts as the first creature-enter trigger, so the host grows the turn you cast this even against a static board. That end-of-turn reset is why the card wants bodies in bursts rather than banked over several turns: a swarm of tokens, a flurry of one-drops, anything that empties a hand in a hurry. The size of the enchanted creature is downstream of that single-turn flood, which lines the card up with token engines and low-curve white shells built to keep creatures entering after it resolves. The risk is the oldest Aura tax: point removal aimed at the host in response to the cast kills the host and leaves the Aura with no target, so it fizzles and never makes the token, costing you both, the two-for-one every Aura carries. For two mana you get a flier plus a conditional pump that pays off exactly as far as the board around it keeps triggering it, and no further.