Cryo/Pyro: They'd gain the Cold or Fire subtype, as appropriate. They'd also gain a breath weapon that deals 3d6 damage (again, cold or fire), ref save for half (DC 10 + 1/2 # of heads + Con mod, or DC 16 in this case). Breath weapon AoE are lines 10' high x 10' wide x 20' long, one from each...