Audacity

Enchant creature
Enchanted creature gets +2/+0 and has trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)
When Audacity is put into a graveyard from the battlefield, draw a card.

Foundations Jumpstart

The Brothers' War

If the creature Audacity would enchant is an illegal target by the time the Aura spell resolves, the entire spell doesn't resolve. It's put into your graveyard from the stack, not the battlefield, so its last ability won't trigger.