Aspect of the Student

Enchant creature an opponent controls
When Aspect of the Student enters the battlefield, surveil 2 and tap enchanted creature.
It doesn't untap during its controller's untap step.
Moonblossom students are renowned for their ability to
push themselves to the limit, studying hard for days at
a time, only to crash hard in the next few days. But
after her trip to the jungle merchant, Sai'a made them
look healthy and well-balanced by comparison.