Piezoelectric (Double IceShock)
Pokémon: 13
4 Black Kyurem
2 Blastoise
3 Wartortle
4 Squirtle
Trainers: 24
4 Switch
4 Energy Search
4 Cheren
4 Energy Retrieval
4 Great Ball
2 Pokemon Communication
2 Skyla
Energy: 15
12 Water Energy
3 Lightning Energy
Free slots: 8
Piezoelectricity refers to the phenomenon of electrical charge gathering in solids, usually crystalline material, when put under pressure. Not only doe it live up to its namesake, but the Piezoelectric double-deck can also be quite a shock for your opponents even when the pressure is not yet on. This can be attributed to the Blastoise evolutionary line, which bypasses one of the fundamental restrictions of most low-level decks: multiple Energy attachments per turn without the usage of an attack. (As a reminder, this is the same reason I suggest a doubled Furious Knights as a strong option for new players.)
While not an ideal attacker, multiple Black Kyurem serve the primary function of a high-HP wall of a Basic Pokémon to set up behind. It can, of course, also be used for attacking. There exist multiple options for directions to take this deck foundation:
4 Lopunny and 4 Buneary allow you to heal multiple Pokémon at the same time; this is made easier by the high Switch count this deck runs, allowing you to retreat damaged Pokémon with no loss of Energy. To compare the attack to a card from the previous format, it is like being able to use a Life Herb on each of your Pokémon (though without the removal of Status Conditions from your Lopunny).
Room for Improvement: It should be somewhat easy, though not entirely necessary, to trade for or obtain Victini (NVI14/NVI98/BW32), improving your odds of success with Lopunny's attack, in addition to allowing for reflips on the attacks of Squirtle, Wartortle, and Black Kyurem.
2 Jellicent, 3 Frillish, 1 Wartortle, and 2 Water Energy allow for you to disrupt your opponent; unless their Retreat Cost is reduced to zero (such as Darkrai-EX), your opponent's Pokémon will have a Retreat Cost increased by one for each of your Jellicent in play. This can make it more difficult for your opponent to retreat damaged Pokémon, possibly making it easier for you to score knock-outs. The Jellicent line of Pokémon don't have strong attacks; they are better left to the Bench, while attacking with Blastoise and Black Kyurem.
2 Electivire, 3 Electabuzz, and 3 Lightning Energy allow for you to damage your opponent's Benched Pokémon before they even have the chance to come Active! The Energy costs are somewhat high, but with a Blastoise in play, they should be easier to manage. This also provides you with a third Energy type (after Water and Dragon) to attack with, increasing your odds of hitting your opponent's deck for its Weakness. This does, however, come at the disadvantage of sometimes not having the right Energy type to attack with.
Room for Improvement: The issue of having the “right Energy” can be alleviated in one of two ways. First, with the use of Kyurem (NVI34 / BW44)L its Water-type Glaciate attack takes the same number of Energy to attack with, all Water or Colorless. It comes with the additional benefits of having 130 HP, and an Outrage attack that becomes stronger the more Kyurem is damaged. Second, using Blend WFLM Energy, a Special Energy card that provides both the Water and Lightning type Energy needed in this deck, will keep you from worrying about having one or the other. However, this comes at the cost of not being able to be searched for by Energy Search, as well as the risk of being discarded by Enhanced Hammer.
For the Ice Shock PCD, I could easily see some sort of play of energy acceleration based on Blastoise and Black Kyurem. There are plenty of good Trainers to work around. The question is, what second line to run? You can go Disruption with Jellicent, but it leaves you with only 4 attackers. You can go speed-stall with Golduck, but there's no power behind that thing. You can go with power with Electivire, but he's kinda expensive. Lopunny has the potential to be decent, I'm just not sure if it's really worth it.
Generally what I had in mind.