Momentum

{2}{G} · Enchantment — Aura

Enchant creature At the beginning of your upkeep, you may put a growth counter on this Aura. Enchanted creature gets +1/+1 for each growth counter on this Aura.

Motor: se resuelve a mano

Rulings (1)

Putting on a counter is optional. If you forget, you can't go back later even if it is something you usually do.
Wizards of the Coast · 2004-10-04