To ensure you get those counters, look for folks like Renata, Called to the Hunt, Grumgully, the Generous, and Master Biomancer

Mime #123 - Scyther #124 - Jynx ex #125 - Electabuzz #126 - Magmar #127 - Pinsir #128 - Tauros #129 - Magikarp #130 - Gyarados #131 - Lapras #132 - Ditto #133 - Eevee #134 - Vaporeon #135 - Jolteon #136 - Flareon #137 - Porygon #138 - Omanyte #139 - Omastar #140 - Kabuto #141 - Kabutops #142 - Aerodactyl #143 - Snorlax #144 - Articuno #145 - Zapdos ex #146 - Moltres #147 - Dratini #148 - Dragonair #149 - Dragonite #150 - Mewtwo #151 - Mew ex #152 - Antique Dome Fossil #153 - Antique Helix Fossil #154 - Antique Old Amber #155 - Big Air Balloon #156 - Bill's Transfer #157 - Cycling Road #158 - Daisy's Help #159 - Energy Sticker #160 - Erika's Invitation #161 - Giovanni's Charisma #162 - Grabber #163 - Leftovers #164 - Protective Goggles #165 - Rigid Band #166 - Bulbasaur #167 - Ivysaur #168 - Charmander #169 - Charmeleon #170 - Squirtle #171 - Wartortle #172 - Caterpie #173 - Pikachu #174 - Nidoking #175 - Psyduck #176 - Poliwhirl #177 - Machoke #178 - Tangela #179 - Mr

Most Expensive Mewtwo Cards: What Has Actually Sold
It's cooler, it makes it easier to tell these cards from other DFCs, it has better symmetry and aesthetics, and it explains why these cards require two different fronts to flip -- plus, in this case, the flavor is literally that two different creatures merge together, so having their two cards become one supports that better