Rax, the Aether Converter

Defender
{u}{u}{r}{r}{g}{g}: you get {e}{e}{e}
(three energy counters)
Pay {e}{e}{e}{e}{e}: exile target permanent you
control, then return it to the battlefield under
your control. Activate this only on your turn
Activated or triggered ability cost one less {e}
can not reduce the cost to less then one {e}