Stoic Angel

Oracle Text

Flying, vigilance

Players can't untap more than one creature during their untap steps.

Card Rulings

3/14/2017 If multiple Stoic Angels are on the battlefield, their effects are redundant. Each player will still be able to untap no more than one creature during his or her untap step.
3/14/2017 Noncreature permanents will untap as normal during their controllers’ untap steps.