Stargate

Indestructible, cannot be countered.
{t}Add a time counter on Stargate then add {c} to the mana pool.
{3}{t} Remove 5 time counters on Stargate add {w}{w}{u}{u}{b}{b}{r}{r}{g}{g} you can only activate this once per turn.
{5}{t} Exile Stargate gain control of {x} creatures where {x} is the number of time counters on Stargate.