Shimmering Efreet
{2}{U}
Creature -- Efreet
2/2
Flying
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.)
Whenever ~this~ phases in, target creature phases out. (It phases in before its controller untaps during their next untap step.)
Vodalian Illusionist
{2}{U}
Creature -- Merfolk Wizard
2/2
{U}{U}, {T}: Target creature 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.)