Evolution/Devolution

By touching a creature you can cause it to take on attributes of its ancestors/descendants. A creature may willingly accept these changes willingly or must make a wisdom saving throw. On a failed save, you may pick one of the following changes and apply it to the creature’s stat block for as long as you maintain concentration 

• Increase or decrease the damage of all of the creatures attacks by 1d4
• Increase or decrease the creatures movement speed by 20 ft.
• increase or decrease the creature’s maximum hit points by 1d4+4
• The creature gains a climbing speed equal to half its movement, or its climbing speed is reduced by 30 (can be reduced to 0)
• The creature gains a flying speed equal to half its movement, or its flying speed is reduced by 30 (can be reduced to 0)
• The creature gains a darkvision 60 ft. or reduces darkvision (if it has it) 60 ft. (it can be reduced to 0). If this creature does not have darkvision you may reduce it’s maximum normal vision 
• Select one of the creatures attacks that cause slashing, piercing, or bludgeoning damage and change that damage type to poison, acid, fire, cold, or lightning, or select an attack that deal poison, acid, fire, cold, or lightning damage and change that damage types to slashing, piercing, or bludgeoning damage