Fish of DEATH! 2 (Griffin this is the Magikarp deck!)

Try to go second with this deck it will pay off most of the time.

The attack the deck uses to deal damage is Raging Fin which, for 2 Colorless energy, does 10 damage + 30 more for each Magikarp and Gyrados in your discard pile. To fully utilize the damage potential of this attack, you can discard all your Magikarp but still use Raging Fin using Ditto's Sudden Transformation ability after attaching a Twin or Double Colorless Energy. 

In order to discard Magikarps and Gyrados, you can play Battle

Try to go second with this deck it will pay off most of the time.

The attack the deck uses to deal damage is Raging Fin which, for 2 Colorless energy, does 10 damage + 30 more for each Magikarp and Gyrados in your discard pile. To fully utilize the damage potential of this attack, you can discard all your Magikarp but still use Raging Fin using Ditto's Sudden Transformation ability after attaching a Twin or Double Colorless Energy. 

In order to discard Magikarps and Gyrados, you can play Battle Compressor and Quick ball in order to discard cards from your hand or the deck. You can easily find these cards with the Shady Dealings ability of Drizzile and Inteleon. You can also re-use this ability by using Scoop Up Net, which the deck plays 3 of.

Setup instructions

Get a Ditto in the active as well as 1 on the bench if you can, but prioritize getting at least 2 Sobble. Then discard as many Magikarp as you can, whilst insuring you have enough energy on Ditto to use Raging Fin. You can use Irida to assist you with any three of these things by finding either Battle Vip Pass, Battle Compressor or Energy Loto. If you cannot find Irida you can use Lumineon to find it. Also any extra search cards you have should be used to find Drizzile for the next turn. Then, attack for some decent damage using Raging Fin and repeat discarding, as well as Ditto attacks by finding the cards to do so of off Shady Dealings.