Ariel, The Sun Seeker

Vigilance, Double Strike.
If there is an Angel on the battlefield,
'Ariel, The Sun Seeker' gains Indestructible.
If there are two Angels on the battlefield
he gains Hexproof. If there are three
Angels he gains Flying.
{r/w}{w/u}{w}{w}{w}: Summon a +4/+4 Angel
Creature Token with Flying.