10 cards in your deck for draw and/or advantage is considered pretty standard, and is in line with what I usually run in a deck
Toon Mermaid can shine in hybrid Decks with WATER monsters that seek to Xyz Summon Bahamut Shark or the Stealth Kragens
send 1 Vampire monster (not named Vampire Koala or Vampire Orchis) from your Deck to the GY whose Level is different from that monsters, and if you do, the targeted monsters Level becomes the Level of the monster sent to the GY, until the end of this turn
Weakness: Lightning (x2) Resistance: Fighting (-30) Retreat: 1 Pelipper Colorless HP120 Stage 1 Evolves from Wingull Ability: Wind Letter When you play this Pokmon from your hand to evolve 1 of your Pokmon during your turn, you may either search your deck for a Supporter card, reveal it, put it into your hand, and shuffle your deck or put a Supporter card from your discard pile into your hand
Every pack also includes a special holographic promo card and Pokemon coin
Then well add a second ability: you cast Barreling Attack on a creature, it gets +1/+1 for each creature blocking it when it becomes blocked this turn