Mabriu, Place of Contemplation

Mabriu enters the battlefield tapped.
{t}: Add {g} or {u} to your mana pool.
Instants and sorceries in your hand have Stasis {2}{g}{u}. (You may cast them for their Stasis cost. If you do, they enter the battlefield as an enchantment without effect. You may pay their stasis cost again at any time to sacrifice it for its effect.)