standard set foil pokemon cards 110 Pcs Metal Gold - 20 cards + 1 foil card I'm new to this hobby,

You add just two counters on your blue planeswalker, because Doubling Season specifically says you only get double counters from an effect , and adding loyalty counters to activate a loyalty ability is a cost , not an effect

You can include up to three other copies of your companion in your deck as normal, cards with companion dont have to be used as companions if you dont want them to be, and you can use a companion in Commander and Brawl, as well

Understanding Strategy Opting for End the Turn requires strategic thinking and a solid grasp of the game's dynamics

How about players who started in your game but are currently out of it

1 Aragorn, King of Gondor