This looks like a really solid Orvar deck! If you're looking to brew something weird, there's actually a 5 color version of Orvar that uses
General Tazri as the commander, then uses her ability to tutor for Orvar (since he's a changeling.) Lots of options for more interaction with all 5 colors, and some slightly more useful "target permanent spells." But your deck looks pretty good the way it is.