The complaints roll in fast with this one, and that's before you even get to the activated ability, which can cast an opponent's spell for free if it was exiled with Voidwalker's ability
Once you get Delirium online, you end up with a 3/3 flyers that attacks each combat if able, which can help provide pressure and get you your attack and damage triggers
Then, if you have 6 or more DON
According to head designer Mark Rosewater, it would work the same as renamed cards, though, with both Infinity and Terminus being treated as the same type when needed
For long-term investors Prismatic Evolutions
One card that has made it into fewer decks thanks to that Mythic price tag is Bennie Bracks, but its one of the most powerful and consistent draw cards in white nowadays