User blog comment:Emptylord/Sandbox/Random Mutation/@comment-4290320-20130830072009/@comment-4290320-20130830095954

Corrosive Blood makes the user's blood green instead of red (ex. when being attacked).

Natural Insticnt causes the next attack to go 'through' the target (not much of a mutation).

Rapid Cell Growth could cause the user to grow in size (think Zac).

Hematophogy could cause the user's model to be splattered with blood when autoattacking (think Darius after ulting).