Diluvii, Home of the Sirens

Diluvii, Home of the Sirens enters the battlefield tapped unless you cast an instant or sorcery this turn.
{t}: Add {u} to your mana pool
{t}: Add {1}{r} to your mana pool. Diluvii,
Home of the Sirens deals 1 damage to you.
Diluvii, the castle beneath the waves, where all
of the Drevlin schemes are concocted.