Create Chimera

The user touches the body of two willing and living medium size or smaller creatures and combines their bodies in a gross amalgamation of body parts, having at least two heads, three legs, and four arms, and being at least one size larger than the largest of the two. This creature keeps the greater of the two creatures' AC +3 as well as keeping the greater of the two's hit points. The caster must choose one of the two creatures, and whichever one is chosen is the creature from which the amalgamation keeps its scores, proficiencies, and modifiers. This creature can speak Common regardless of the languages spoken by the combined creatures. If one of the two creatures has the ability to cast spells, so can the amalgamation, however its spell casting ability is now -2.