Ethri, Faceless Choir

Tapped face down creatures you control can’t be turned face up. Ethri counts as a face down creature.(They still have their other characteristics) If Ethri would be turned face up instead put a chours counter on it. Morph {1}{W}{U}{G} {T}:Untap another face down creature Other face down creatures you control you control get +1/+1 for each chours counter on Ethri and have {T}: Add one mana of any color. Spend this mana only to case face down spells or turn permanents face up