Nunu, The Boy and His Yeti

Lifelink
{r}: Other creatures you control have haste
Whenever this creature enters the battlefield,
search your library for an instant or sorcery
card with converted mana cost equal to or
less than the amount of colors spent to cast
it, reveal it, and put it into your hand; Shuffle afterwards. Whenever a creature blocks this
creature, tap that creature. It doesn't untap
during its controller's next untap step.
"It's okay, we'll play later!"