The Legendary Creature turns your lands into pump spells, sprinkling +1/+1 counters on creatures however you'd like
When you attack, Clavinelo turns one of your attacking vampires into a Demon, and gives them a permanent ability
This will allow you to move on to the next phase, which is to get Merfolk creatures resolved on the battlefield, and then you can use the natural draw potential that comes with this deck to your advantage and cast enchantments to further strengthen them
Casting multiple counters each round can be taxing on your mana, so be sure to make liberal use of Rewind, Unwind, Snap and Frantic Search to keep pumping out Drakes
She has no Grass Pokemon, which means playing Fire won?t mean you have the type advantage, but that doesn?t really matter when you?re facing a deck as poor as this