Theyre legal for play in formats where the original cards are legal, so you can absolutely sleeve them up in your Commander decks or even Legacy decks if applicable
First off, Blessing of Frost doesnt target
P/T Number 389 Language English Legal Formats Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Standard, Timeless, Vintage Rulings (6/6/2025) A creature attacks alone if it's the only creature declared as an attacker during the declare attackers step (including creatures controlled by your teammates, if applicable)
While this doesnt immediately sound useful, the inclusion of characters with enters play and exits play abilities means you can multiply the uses you get out of each card
While not exactly a chase card from the set so far, itll wind up being a power player by this time next year