War for Arrakis

Whenever you sacrifice a Desert and whenever
a Desert card is put into your graveyard from
your hand or library, put that card onto the
battlefield under your control at the
beginning of your next end step.

At the beginning of combat on your turn, if
you control five or more Deserts, create that
many 1/1 red, green, and white Sand Warrior
creature tokens. They gain haste.