Exoth, Shadows Reborn

Flying, Vigilance, Deathtouch
When Exoth, Shadows Reborn leaves the battlefield, put it into exile instead.
Create a 4/4 black Demon Totem token with flying.
At the beginning of your next upkeep, if Demon Totem is still on the battlefield, sacrifice it and return Exoth, Shadows Reborn onto the battlefield with a -1/-1 counter on it.