Hvit, the Living Altar

Hexproof from converted mana cost 3 or less
Sacrifice another creature, enchantment, artifact, or planeswalker: Search your library for a permanent card of the same type with converted mana cost equal to 1 plus the sacrificed permanent's converted mana cost, put that card onto the battlefield, then shuffle your library. Activate this ability only any time you could cast a sorcery and only once each turn for eac