Nanshe the Dreamer

Whenever Nanshe, the Dreamer enters the battlefield, tap all other creatures and put a
dream counter on them. Creatures with dream counters on them don't untap during their controller's untap steps.
{x}{x}, Remove a dream counters from X target creatures: Nanshe, the Dreamer gets +X/+X
till end of turn, where X is the number of dream counters removed.