You specialize in the magic of summoning powerful creatures to aid you in combat. Any creature summoned or created by a spell that you cast appears with 1 extra hit point per Hit Die it has. While you are within 30 feet of it and you can see it and control it, it gains a bonus to its AC and saving throws equal to half your proficiency bonus, and any ability checks to dispel it are made with disadvantage. This feat does not affect creatures you summon that have class levels.