TChalla ramps into large artifacts and uses the Monarch mechanic for card advantage, leaning on Vibranium-themed Wakandan technology
A few examples are that Mana Crypt got reprinted in Double Masters 2022, then the following year as a Special Gust in LCI
Elusive Spellfist was much better, since a single trigger had a more dramatic effect
As you cast your first instant/sorcery each turn, you can exile a random one from that graveyard of yours and copy it, and then you can keep on copying it as you cast more and more instants and sorceries and exiling more options at random
Graded Population Report: Beatrix, Loyal General [Extended Art] #426 Visualize the distrbution of grades in the chart
The only downside is that they don't have basic land types, so you can't get them with fetchlands (Arid Mesa), ramp spells (Farseek), and they don't fuel various cards that care about basic lands types (Crypt Ghast)