Carson, The Transcendant

Flash, Phasing (This phases in or out before you
untap during each of your untap steps. While it's
phased out, it's treated as though it doesn't exist.)
When Carson, The Transcendant enters the battlefield, you may exile another target creature
you control, and return it to the battlefield under its
owner's control.
{r/w}{r/w}: Exile Carson, The Transcendant and return it
to the battlefield under its owner's control.
"Mount Everest? No problem."