Treasured oasis

Treasured oasis enters the battlefield tapped
unless you control a gate.
Treasured oasis is indestructible.
When Treasured oasis enters the battlefield
create a treasure artifact token with {t}: sacrifice
this artifact add one mana of any color.
Whenever a gate enters the battlefield create a treasure artifact token.
{t}: add {2}
{t}: create a gate of your chosen guild