Empowered Magic

You've learned to overload the arcane energies used in your attacking spells, blasting your enemies with raw magic force. You gain the following benefits:

• Before you make a spell attack with a ranged or touch spell that is of cantrip level, you can choose to take a -5 penalty to the attack roll. If the attack hits, you add +10 to the spell's damage.
• On your turn, when you score a critical hit with a cantrip spell attack or reduce a creature to 0 hit points with one, you can use your reaction to cast another cantrip at a creature you can see. The cantrip must have a casting time of 1 action, and must target only one creature.
• You learn one cantrip from the Wizard's spell list. This cantrip is always prepared and does not count against the total number of spells you can know or prepare.