Why it's strong: The combination of Blastoise and Piplup gives it a solid foundation for both attacking and defensive strategies
In the Japanese, Korean, and traditional Chinese subsets, each booster pack contains seven cards with two guaranteed Holofoil cards, and the common, uncommon, and rare cards have Mirror Holofoil variants with a Pok Ball pattern
So many cards come with ETBs these days, and looping them is key
Given that we're evaluating Changeling OutcastChangeling Outcast, however, not Universal AutomatonUniversal Automaton, my work here is pretty easy: Authority of the ConsulsAuthority of the Consuls is the slam dunk entry here, and beats the others by a mile
If you want to exploit the lifegain side of things, you have tons of options