Summoner Master

Your summons become stronger

You are imbued with the ability to overchannel your magic in your summons, whenever you summon a monster you can choose to improve its abilities and make it bigger in size or reinforce its natural attacks. The summon gains additional hit points equal to your level and its natural attacks deal 1 additional damage die on a successful attack as well, instead of the additional damage you can choose to deal an specific type of material damage such as Silver, adamantium or the like. Once you use this ability you can not use it again until you finish a long rest