In the recent results of the Fandom Legends tournament, there is one interesting decklist that was piloted by Piotr Glogowski a.k.a. Kanister as its username in Magic Arena. The deck can be called a variant or just a new deck tech for the card Arclight Phoenix and is going for the Mono Blue route. The main strategy is just simple: mill yourself. I was not able to check its final record in the tournament but nevertheless it was interesting to see this type of deck in the current Standard format.

Here below is his complete decklist as sourced from MTG Top 8 website:

Maindeck
16 Island
4 Watery Grave

4 Arclight Phoenix
4 Merfolk Secretkeeper
4 Narcomoeba

4 Creeping Chill
4 Discovery / Dispersal
1 Maximize Altitude
3 Mission Briefing
4 Opt
4 Radical Idea
4 Unsummon
4 Drowned Secrets

Sideboard
2 Aether Gust
3 Ashiok, Dream Render
3 Disdainful Stroke
3 Jace, Wielder of Mysteries
3 Mystical Dispute
1 Negate