Whenever you venture into the dungeon, you choose one of three Dungeons, each of which has a card that exists separate from your deck
1 - Meowth ex Ability: Last-Ditch Catch Once during your turn, when you play this Pokemon from your hand onto your Bench, you may use this Ability
So you're either shutting down an attacker, resting a Character so you can attack and KO it, or preventing a blocker from halting one of your attacks on the opponent's Leader
Merged creatures from a mutation are counted as a single creature, not as multiple creatures in a pile (even though thats what they physically are)
Recently, there have been a few notable sales of the Zoroark GX Pokmon card from the Sun & Moon Shining Legends set
He also rewards you for gaining life by buffing your creatures, handing +1/+1 counters out like candy