It's built around casting various noncreature spells, and either burning your opponents if you use Y'shtola as your commander, or amassing a battlefield of tokens if you're using G'raha
In comparison, those Unfinity cards that don't feature the new stamp are called 'eternal cards', and can be used in any format
Theres always the danger of letting other players draw additional cards, though
It also can, with no mana, exile two legendary cards from your graveyard to play your legendary stuff from it this turn, great recursion in a legendary themed deck
Since Narsets ability states that your opponents cant draw more than one card per turn, Wheel of Fortune will force them to discard their entire hand and only draw one back, while you draw the full seven