Sasaya,, +Orochi, +Ascendant (2)
Reveal your hand: If you have seven or more land cards in your hand, flip Sasaya, Orochi Ascendant.
Whenever a land you control is tapped for mana, add an additional one mana of any type that land produced for each other land you control with the same name as it.
Gatherer works better in the Companion app!