Jack Frost, Wintermancer

Hexproof from black

Flash Freeze — At the beginning of your upkeep, choose target creature that attacked you during its controller's last turn. That creature phases out until Jack Frost, Wintermancer leaves the battlefield. Untap that creature as it phases in this way.

"Jack Frost is about! He's after our fingers and toes;
And, all through the night, The gay little sprite
Is working where nobody knows."
— Cecily E. Pike