While Krav possesses characteristically Black abilities that allow its controller to sacrifice creatures for numerous forms of value, such as cards and life, Regna is characteristically White, creating Soldier tokens each turn as long as her controller is gaining life
For that reason, Id include a fair amount of artifact mana cards that cost three mana, like Darksteel Ingot
Theyre an X Black, Red, and Green 0/0 that enters with +1/+1 counters on it equal to the amount of mana youve spent on them
Any "as [this creature] enters the battlefield" or "[this creature] enters the battlefield with" abilities of the creature will also work
We hope you enjoy them, and we look forward to your feedback and suggestions for improving the system in the future
Skymarcher Aspirant can hopefully get some chip shots in early game as a one-drop, then later when the battlefield gets clogged and your opponent has blockers then it can ascend to the sky, gaining flying permanently when you ten or more permanents at one point