The Lighthouse

Artifact spells you cast cost {2} less to cast.
The Lighthouse enters the battlefield tapped.
{t}: Add {g}, {w}, or {u} to your mana pool.
—
"The ocean of stars in our galaxy is finally within our
reach... The universe lies ahead of us, waiting to be discovered. And now, at last, we have a gateway to
ascend to it. Over and over again."
-Kei Nagase