Since this doesn't count as an attack, you can use it to get multiple prizes in a turn, or knock out the Active to then attack whatever gets switched in
Promo cards often feature exclusive artwork, distinct logos or symbols (usually a black star with Promo), and limited print runs, making them collectible and sometimes highly valuable
Since Cyclonic Rift appears in over 672,000 decks according to EDHREC, its safe to say theres a lot of demand
Also, there are always ways to build decks in colours that dont make sense, there are a few Blue Aggro decks, but it isnt a common thing, and you shouldnt be trying to break the mould with your first deck
Young Wolf provides a much better alternative a creature that has to die twice before it's actually removed
MTG Universes Beyond sets Universes Beyond is a sub-brand for MTG, which features licensed cards for well-known IPs