结界~灵气
结附于生物
在你的维持开始时,在所结附的生物上放置一个+1/+1指示物。
当所结附的生物进行攻击或阻挡时,牺牲原初茧。
The counters are put on the creature, not on Primal Cocoon. They'll stay on the creature even after Primal Cocoon is sacrificed or otherwise stops enchanting that creature.
Primal Cocoon's first triggered ability triggers at the beginning of the upkeep of Primal Cocoon's controller (who is not necessarily the enchanted creature's controller).