Now there are a few cards in here that strike me as a little off, inviting ways for you to push some new talent in
This is more a Commander rules clarification than a Duel Commander specific one, but I thought it would be worth mentioning
Triple Triad is neat
They were 2/1 for WW or BB, had protection from the opposite color and could be pumped or given first strike
9 Sheoldred, Whispering One Sheoldreds First Printing Packs A Wallop During Upkeeps The first printing of Sheoldred might lack the utterly maddening qualities of its current-day Standard counterparts (especially the omnipresent Sheoldred, the Apocalypse), but it still features not one, but two hugely powerful upkeep abilities
His Mardu colour identity is important too, allowing the deck to break outside of the usual Rakdos colours for vampires and include all the white vampires that have been printed in recent times, as well as providing access to enchantment removal which historically black and red have struggled with