Gaia, Gravity Eternal

{t}, Add{w}{u}{b}{r}{g}to your mana pool,
this mana may be used to cast instants or sorceries from your hand at any time. Use this ability only on an opponent's turn.
Instants and sorceries you cast have flash.
{t},{u}{b}{g}: Add one time counter: At any time, remove three time counters from Gaia, Gravity Eternal: Destroy target card, it gets removed from the game.

In the end, as it all turns to dust-
He remains, timeless.