Feraligatr

It is hard for it to support its own weight out of water, so it gets down on all fours. But it moves fast.

Pokemon Power — Downpour: As often as you like during your turn (before your attack, you may discard a -Energy card from your hand. This power can´t be used if Feligatr is Asleep, Confused, or Paralyzed.

Riptide (10+): Does 10 damage plus 10 damage times the number of Energy cards in your discard pile. Then, shuffle all Energy cards from your discard pile into your deck.