Callindor, Harbinger of Chaos

Hexproof
As Callindor, Harbinger of Chaos enters the battlefield, name a creature or planeswalker you
don't control.
Reveal the chosen name: Gain control of all
creatures and/or planeswalkers with the chosen
name. Use this ability if a creature or
planeswalker with the chosen name is attacking
you or is activating an ability.