Glaring Aegis
Enchantment — Aura
Enchant creature
When this Aura enters, tap target creature an opponent controls.
Enchanted creature gets +1/+3.
Illustrated by
The List#DTK-18CommonEnglishLegality
Rulings
Jul 12, 2019
If the target creature is an illegal target by the time Glaring Aegis tries to resolve, the spell doesn’t resolve. It won’t enter the battlefield, so its ability won’t trigger.