I recommend Lugia Ex because it gets heaps of energy acceleration in Blastoise/Keldeo and unlike lighting energy, you can use Colress Machine to search and attach it and if your strategy goes right, you could take 3 prizes for an Ex knock out.
Except you then have to make room for
Colress Machine and
Plasma Energy then.
Black Kyurem EX is just clearing one or two slots for it, then another two or three slots for the Energy suggested. If you are running basic
Lightning Energy, possible another slot for a TecH
Energy Search to give
Skyla a chance of snagging the first
Lightning Energy on command.
Kyurem NVI is usually helpful for spread.
Not helpful, but required.
Lugia EX hits for just 120. So while two attacks can nab you four Prizes (OHKOing two non-Pokémon-EX),
Black Kyurem EX simply OHKOs two Pokémon-EX. :thumb:
You would also have to run 2-3 Switch so you could get Lugia to active to get the KO.
...or you wait for your opponent to KO your
Kyurem, or you manually retreat. It is
Blastoise; you would be better of maxing out
Energy Retrieval; even if
Kyurem is Paralyzed or Asleep, you just use
Keldeo EX and Rush In, then manually retreat. One
Energy Retreival gets back two basic Energy cards, and is useful elsewhere as well.
With Black Kyurem, you have to use Energy Search to get the energy out and it takes a lot of time for Black Kyurem to recharge and you might not have the energy for that.
If you deck is well made, it should take just one turn.
You would also need switch for this card. Here are what the cards you would have to add to Blastoise/Keldeo:
Lugia Ex:
+ 1-2 Lugia Ex
+ 2-3 Colress Machine
+ 1-2 Kyurem NVI (if this isn't already in your deck)
+ 2-3 Plasma Energy
+ 1-2 Switch
Black Kyurem Ex:
+ 1-2 Black Kyurem
+ 2-3 Energy Search
+ 2-3 Lightning Energy
+ 1-2 Switch
Not sure about
Lugia EX, but for
Black Kyurem EX, adding to a typical
Blastoise/
Keldeo EX would me adding:
2 Black Kyurem EX
2 Energy Search (maybe even just one)
3 Lighting Energy (maybe even just two)
...and if you aren't already running at least three copies of
Energy Retrieval, bump it up to that amount (or a full four).
Although Lugia takes 1-2 more cards to add in, I prefer Lugia Ex over Black Kyurem because after using Kyurem twice, You can attack with Lugia and suddenly have the game is already gone.
I just don't think Lugia EX is a good fit for
Blastoise; the set-up required means you could just attack twice with
Black Kyurem EX, scoring up to four Prizes. You have
Blastoise; powering up
Black Kyurem EX should be easy once your usual set-up for the deck is complete (usually turn 2 or three).