Most games end with a boss fight, and a round of Commander played against a Goblin deck is no exception, as the best-ever Goblin card for Commander is the inimitable Krenko, Mob Boss
We always recommend you start off with an MTG precon before learning how to build a Commander deck
Wow, there are literally dozens of you
Ability costs can include ink (paid by exerting cards in your inkwell), exerted cards (paid by, well, exerting cards) or something else explained on the card itself
Senseis Divining Top lets you draw the tutored card immediately, while Necropotence turns that precision into raw inevitability
Add in a first edition badge, meaning its from the first English run ever made