Cayden, Destroyer of Dogs

+2: Target non-legendary creature you don't control becomes a dog in addition to its other types. It keeps all abilities but get a dog counter.
+1: Target dog is destroyed. All Cats, Dinosaurs, and Shamans gain +1/+1.
-20: All non-legendary creatures you don't control become dogs and get dog counters. All creatures with dog counters are exiled.1st and 2nd activate