The sixty cards each player has drafted form their "card pool." Using those cards (and as many basic lands as desired), each player builds a deck of at least 60 cards, including their commander
And there are a few different ways to combo off, regardless of your choice
One of the of the most compelling new cards is Souvenir Snatcher
Despite any combination of Pokmon you may bring (barring most legendaries), the game's AI will always match you up against opponents with Pokmon who have almost perfect type coverage and will absolutely stomp you if you are not prepared
It's an instant and is one of the only Red board wipes that can deal damage to creatures with Flying while still hitting guys on the ground
So, to summarize: If your win% is below 58%, you should be playing Ranked drafts to minimize losses, regardless of anything else