Hidden Oasis of Azcanta

Ascend (Any time you control ten or more
permanents and you don’t have the city’s blessing,
you get the city’s blessing for the rest of the game.)
{t}: Add {c} unless you have the city's blessing.
Whenever a land enters the battlefield under
your control or a permanent you control
transforms into a land, if you have the city's blessing, add one mana of any color that land
could produce.