Overpowering Onslaught

 You gain a number of Onslaught Points equal to your Proficiency Bonus. You may spend one Point to activate one of the following abilities(no action required) You regain all spent points when you finish a long rest. 

• When you choose to activate this ability, for this turn. You are not limited to the Bonus action/Action rule when casting spells above cantrip level, you may cast as many leveled spells in a round as you want, providing you have the actions and the spell slots and are not limited in some other way. 
• When activate this ability,  for this turn when you cast a spell against a target that is within 5 feet of you, the target has disadvantage on its saving throws against that spell.