Kathril lends itself to a graveyard-focused keyword commander deck
With cards, people already know the characters to some extent, and they have personal feelings and attachments from playing the games, so you have to make sure there's no disconnect between the pieces and people's expectations
How many fling effects can you name in Magic
To continue using Khans of Tarkir as an example, each of the five clans has a signature mechanic associated with it: Abzanoutlast, Jeskaiprowess, Sultaidelve, Marduraid, Temurferocious
15 MTG cards per Draft Booster
Finally, the deck features a handful of powerful removal spells and wrath effects, spells that can directly turn vehicles into artifact creatures (avoiding crew costs), spells that can protect your vehicles, as well as powerful card-draw engines such as Whirlwind of Thought and repeated token generators such as Outlaw's Merriment, Efficient Construction, Saheeli, and more