2013-09-15

If the target of an Aura is illegal when it tries to resolve, the Aura won’t resolve. The Aura doesn’t enter the battlefield, so you won’t get to draw a card.

2020-11-10

If the target creature is an illegal target by the time Dragon Mantle tries to resolve, it doesn’t resolve. It won’t enter the battlefield, so its enters-the-battlefield ability won’t trigger.

2020-11-10

If the target creature is an illegal target by the time Dragon Mantle tries to resolve, it doesn't resolve. It won't enter the battlefield, so its enters-the-battlefield ability won't trigger.