Yalkia, the Propogator

If Yalkia is in your command zone you may have cards of any color in your deck if there have
devoid or are eldrazi, and you may spend colorless mana as though it
where mana of any color to cast them activate this ability to only to pay fot there mana cost.

At the beginning of your upkeep for each nonetoken Eldrazi you control, create a colorless 1/1 eldrazi scion creature token with '' Sacrifice this creature add {c}.''