Rytea, Drifting Pillager

As an additional cost to cast Rytea, Drifting
Pillager, sacrifice a noncreature permanent
Flying, Deathtouch, Defender
At the beginning of each player's upkeep that player
sacrifices two nonland, noncreature permanents
unless they control five or more dragons
Whenever a players sacrifices a non-token permanent that player creates a 1/1 dragon spirit with flying.