Hijiku's Oceans

Indestructible, Hexproof.
{t}: Tap 2 permanents each player controls.
{t}: Add one mana to your mana pool, and only
use this mana to cast instants or enchantments.
{t}: Add one mana to your mana pool, and only
use this mana to cast artefacts or sorceries.
{t}: Add one mana to your mana pool, and only
use this mana to cast creatures.
{ut}: Tap a land you control.