This is especially common in GUx towns, as their in-color options are a bit worse
Or, splash white instead and summon Cid, Timeless Artificer to buff all your Artifact creatures and Heroes
These appear in the land slot of your pack 55% of the time, so you can expect your prerelease pool to have roughly 3.3 dual lands on average
There are multiple blue Beauty and the Beast cards in the likes of Gaston, Intellectual Powerhouse - which will help you to search through your deck for the cards you need by, for example, finding those Dwarfs to combo together - and song card Four Dozen Eggs, which will use Rise of the Floodborns Resist keyword to reduce damage your character take for the next turn
Partner (You can have two commanders if both have partner.) If your Commander deck has two commanders, you can only include cards whose own color identities are also found in your commanders' combined color identities
Blue-Red 4-Drops | Best Final Fantasy Draft Decks This deck is fairly straightforward - you want cards that care about playing 4+ mana spells, and spells that trigger them