How this happens varies wildly
This isnt absolutely necessary, but having a commander that can draw you some extra cards at any point during the game will make sure you never run out of things to do
Fear not: heres a chart showing where to find what, from WotC's official article about collecting Wilds of Eldraine
Haytham Kenway Just in case your friends all built assassin decks, Haytham Kenway is here to be the silver bullet to the newly supported creature type
In the event that CGC, at its sole discretion, determines that the fair market value of a collectible is higher than the value stated by the submitter, CGC will move the collectible to the appropriate higher tier and the additional charge will be the responsibility of the submitter
Yes, it's five mana like Hour of Eternity but it isn't rocked by bounce effects