Shrine of Spiraling Aether

{t}: Add {c} to your mana pool and place a charge counter on Shrine of Spiraling Aether. Only one charge counter may be placed on Shrine of Spiraling Aether per turn.
{t}, Remove all charge counters from Shrine of Spiraling Aether: Add {x} mana of any one color
to your mana pool, where "X" is the number of charge counter removed this way.