With Gifts Ungiven and this both legal in Commander, blue mages are never too far away from the answers they need to win the game
The Silumgar is a feature in a U/B control shell, and from Commander to Standard, your casual decks can use it
Cycling has now been upgraded to deciduous status, meaning it can be used sparingly in any set where it's needed, and the set doesn't need an overarching cycling theme for the mechanic to appear there
Relic of Progenitus has been one of the premium answers to some strategies: Its cheap, and can play a grindy game removing one card per turn, or one-shot-exiling both graveyards at the right time
Pain Lands The pain lands, printed in various sets, are a very versatile bunch of lands
Talk with the judge staff and let them know your interest in case theyre given boxes for the event