The Mana Anomoly

This spell cannot be cast if you have already cast a spell this turn.

As The Mana Anomoly enters, choose a basic land type.

When The Mana Anomoly enters, tap all lands you control.Put a stun counter on each land tapped this way.

Lands you control enter tapped.

Whenever a land you control of the chosen type is tapped for mana, add one mana of any type that land could produce.