The basic starter set here is an absolute mess, a cobbled-together Elemental Hero deck with almost no decent cards and only a single copy of each
I'm curious why it only produces red mana, though
You must ensure that your face-down spells and permanents can be easily differentiated from each other
I was going to use near blank cards like Darksteel Relic or Spellbook as my example of a blank card but the issue there is that you can have all sorts of uses and synergies for those things and that all rather muddies the waters
You cant put Sisu into your inkwell, but in exchange you get an utter powerhouse of a card, with hefty 2/4 stats, and the ability to quest for two lore
The gist of the Red Eyes deck revolves around the Joey's signature Red Eyes Black Dragon, and you'll have a ton of cards to quickly get it out on the field through Special Summon (Red Eyes Baby Dragon, The Black Stone of Legend, Return of the Red-Eyes), and keep it out there, along with other Red-Eyes cards