Gates of the Penitent

Gates of the Penitent enters tapped.
When Gates of the Penitent is untapped,
any nontoken creature that isn't Phrexian
enters tapped. Each player
must pay {p/b},{p/w}, or {p/g}
for every creature tapped this way.
If not, then player sacrifices
their creature instead of playing it.
{t}: Add {b}{w}{g} to your mana pool.
Spend this mana only to cast Phyrexian spells.