4th Floor: Underground Lake

{t}: Add {c} to your mana pool.
{t}: Add {c}{c} to your mana pool. Use this ability
only if you control Gargantua.
{t}: Add {c}{c}{c} to your mana pool. Use this
ability only if you control Gargantua, 4th Floor
Guardian.
This floor is an underground lake contained with a
cavern. In the past, before Ainz Ooal Gown's conquest
of the tomb, the boss of this floor was a giant white bat.