Spontaneous Generation

Hoarding turned into an army, without even the cost of the hoard. The design pays you for a full grip and then leaves it intact: it counts the cards in your hand but never asks you to spend them, so the same seven cards that built the board are still yours to cast afterward. Cast it on an empty hand and you get nothing; cast it with a fat grip and you have converted pure card economy into a wide green board, no creatures required, with the hand still loaded behind it. The tension lives entirely before the spell resolves: every card you cast to develop your position is one fewer Saproling waiting to happen, so the payoff rewards a patient, durdling posture and punishes a fast curve-out. It is a body-count multiplier rather than a creature spell, scaling off the very resource other strategies are racing to spend down. The Saproling subtype is the load-bearing detail, because a clutch of expendable green bodies is rarely just expendable: each token is a potential sacrifice cost, an attacker, or a body to anthem and double up. The rate is openly generous, and the only real constraint is self-imposed, the discipline of having sat on your hand long enough to make the count worth it.