Lumi, Dhaalan'tals' Champion

Flying
{1}{u} : Lumi, Dhaalan'tals' Champion phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before its controller untaps during their next untap step.)
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)