Captivating Storyteller

Morph {1}{u}
When Captivating Storyteller is turned face up,
you may tap target creature, it doesn't untap
during its controller's next untap step
{g/u}{g/u} : Turn Captivating Storyteller face down
Many wonder how one as small as I has survived the
terrors of the fronier. Is it time I show you?