A Dion, Bahamut's Dominant Commander deck is a Knight Typal deck, meaning it's a deck that focuses primarily on one creature type, in this case, Knights
I know many say you have to be at PSA 9 or 10 to make it worthwhile, but Ive made a lot of money on PSA 7s and 8s in my lifetime as many people get priced out of the high end cards quickly
We know they're underwater with a minimal amount of cues, which is both reinforced by the limited use of color and the lily pad vines we see
On top of that, his ability is great: Whenever you play a Floodborn character, each opponent chooses and discards a card
Its important to note that the card you search for does go on top of your library, so it does take a little bit of setup
What is Foundations Jumpstart