This spell costs less to cast for each land card in your graveyard.
Whenever Yuma enters or attacks, you may sacrifice a land. If you do, draw a card.
Whenever a Desert card is put into your graveyard from anywhere, create a 4/2 green Plant Warrior creature token with reach.
Yuma is a lands-matter token engine: fill your graveyard with lands (especially Deserts) to cheaply cast Yuma, then sacrifice and recur lands to draw cards and spit out 4/2 Plant Warriors. You grind value while building a wide reach-laden army, then close with overrun effects or recurring landfall/sacrifice loops.
Cheap-to-cast commander that can come down for very little mana with a stocked graveyard
Strong card advantage engine via land sacrifice on ETB and attacks
Generates a steady stream of 4/2 reach tokens from any Desert hitting the yard
Naturally resilient board presence in Naya colors with access to ramp and overrun
Synergizes with both landfall and land-destruction/sacrifice themes
Sacrificing your own lands can leave you mana-light without recursion
Wants two distinct subthemes (Deserts + lands graveyard) which can dilute the build
Plant Warriors are only 4/2, dying to most board sweepers and pingers
Eight mana value if cast 'fair' makes him slow without graveyard setup
Heavy reliance on the graveyard makes it vulnerable to exile-based hate
Legendary Creature — Human Ranger
less to cast for each land card in your graveyard.