Hakna, Winter Supreme

Hexproof, haste, vigilence
When Hakna, Winter Supreme is dealt damage by a source you don't control, tap target permanent. That permanent doesn't untap during its controls next untap step. Each player draws a card.
{r}{w}{u}: Target creature you don't control deals 1 damage to Hakna. Each player searches their library for a card, then each player shuffles their library, and puts it second from the top.