Kaldheim

Frostpyre Arcanist | Creature | Giant Wizard | This spell costs {1} less to cast if you control a Giant or a Wizard. When Frostpyre Arcanist enters the battlefield, search your library for an instant or sorcery card with the same name as a card in your graveyard, reveal it, put it into your hand, then shuffle. | Sam Rowan

Narfi, Betrayer King | Legendary Snow Creature | Zombie Wizard | Other snow and Zombie creatures you control get +1/+1. {S}{S}{S}: Return Narfi, Betrayer King from your graveyard to the battlefield tapped. ({S} can be paid with one mana from a snow source.) | Daarken

Moritte of the Frost | Legendary Snow Creature | Shapeshifter | Changeling (This card is every creature type.) You may have Moritte of the Frost enter the battlefield as a copy of a permanent you control, except it's legendary and snow in addition to its other types and, if it's a creature, it enters with two additional +1/+1 counters on it and has changeling. | Eric Deschamps