If you descended that turn, the descend badge on cards will light up, cards that care about the number of permanents in your graveyard will have a counter badge, and cards that track the number of times you've descended will show that number next to the descend badge
Even just being able to find a Dragon more reliably can make a big difference and Dig Through Time gives us a lot of looks
Creatures (23) 3 Gifted Aetherborn 4 Dusk Legion Zealot 4 Champion of Dusk 1 Cordial Vampire 4 Knight of the Ebon Legion 2 Callous Bloodmage 1 Voldaren Bloodcaster 4 Concealing Curtains Planeswalkers (4) Lands (22) Spells (11) You could easily be convinced to splash a color in this deck, probably for a lot of the splashier Rakdos Vampires from the last year, but keep it together
The only way to manage that is to either make a five-color deck, which risks leading to you cutting some of your favorite jankier planeswalkers in favor of the most efficient options, or make four decks around the theme, which is impractical
Urshify can easily take down various Flaffy in the second turn so how is Ray going to ensure attack continuity