Mariner Sage - Tidal Surge

Eminence — Once per turn, when you play a
land that produces {u}, you may play one
additional land.
{t} Discard a land, Scry 2 and Draw 1.
{t} — Tidal Surge: Tap or untap a
target permanent. If you tap a target permanent,
that permanent does not untap during its controllers' next untap step.