7th continent card sleeves "7th Continent" (Base Game) Compatible Sleeve Bundle (8815 X 9) this game provides entertainment for fans of all ages The 7th Continent Card Sleeves

It can also allow you to one-shot Charizard ex, trading one Prize for two

However, the fact that the summons are going to die in a couple of turns anyway makes me think this is more likely to be just a strong sideboard card

Simic Aggro Pawpatch Recruit | Illustration by Johan Grenier Creature (30) Azure Beastbinder x2 Badgermole Cub x4 Gene Pollinator x4 Jackal, Genius Geneticist x4 Llanowar Elves x4 Mockingbird x2 Ouroboroid x4 Pawpatch Recruit x4 Tyvar, the Pummeler x2 Enchantment (4) Instant (2) Sorcery (2) Land (22) Botanical Sanctum x4 Breeding Pool x4 Forest x5 Multiversal Passage x4 Restless Vinestalk Willowrush Verge x4 Sideboard (15) Reclamation Sage Repulsive Mutation Sab-Sunen, Luxa Embodied Spider-Sense x2 Soul-Guide Lantern x2 Torpor Orb x4 Tishana's Tidebinder x2 Unable to Scream x2 Simic Aggro is also a strong option, with cards like Ouroboroid and Quantum Riddler

So, it becomes obvious that Wailord needs integration into a Water-centric deck with cards that can accelerate Energy