Even if you arent willing to go to that extreme, just playing good, expensive green cards will already make you some birds
Surge Rainbow Pokemon Cards: Moltres, Articuno, Zapdos, Gengar, Machamp, Wigglytuff Immersive Cards: Charizard, Pikachu, Mewtwo, Mew Gold Cards: Charizard, Pikachu, Mewtwo Genetic Apex was the launch set for Pokemon TCG Pocket
The card has been graded by Beckett Grading Services with 8.5 (NM-MT+) and bears the coveted 1st Edition stamp
For example, I use [c]Ankle Shanker[/c] to attack my opponents [c]Ugin, the Spirit Dragon[/c]
Even if Jigglypuff Promo-A doesn't fit in well with the Pikachu-EX deck, it's unlikely to improve the other decks to the point of overtaking the Electric deck
You should look to these first before deciding on what cards best complement your overall strategy