biology alteration

you choose a willing creature that is in range, it gets an upgrade of your choice:

• saving throw: creature gains proficiency in one type of saving throw- str,dex,con,int,wis,cha.
• keen senses: gain advantage on perception rolls based on smell, hearing or sight, choose one.
• proficiency: gain proficiency in a skill.
• Expertise: gain Expertise in a skill in which you are proficient.
• senses: gain one additional sense with a range of 30ft, choose darkvision, tremorsense or blighsight.
• natural weapons: grow horns claws or fangs giving you a attack of 1d6+(str or dex).
• natural armor: your natural armour becomes 12 + dex modifier.
• speed: gain 30ft of swimming or climbing speed, or an additional 15f of walking speed.

additionally you may gain the natural ability of another creature, this must be present for the duration of the spell casting, if this is not a willing creature it must pass a constitution saving throw against your spell dc.

Once a creature has been changed by this spell, it cannot be affected by it again for 1 year, after which time the effect becomes permanent and part of the creature's biology, and only a spell of wish can dispel it.