Inspiration's Call

You may only cast this card if you control a card named Eikar Tur, Choir's Inspire
When this card enters the battlefield, create a 0/0 blue white Choir creature token that has This creature gets +{x}/+{x} where {x} is the amount of Choir creatures you control, then equip this to that creature
Equipped creature has flying, vigilance, and hexproof