Channel the Eons

If you paid life to cast Channel the Eons, counter
it unless you also pay {e}.
Pendulum — Whenever Channel the Eons or
another nonland card you own switches zones
other than when it enters the battlefield or is put
into a graveyard from the battlefield, you may
exile it. If you do, you may cast it this turn.
Otherwise, draw a card.
Cycling {e}{e}{u/r} ({e}{e}{u/r}, Discard this card: Draw
a card.)