Thrasios, Triton Hero often chills in the command zone until you have infinite mana to feed into its activated ability so you can draw your deck and win with Thassa's Oracle, but you can also exploit the activated ability with cards like Training Grounds and Seedborn Muse
To be fair, that makes sense considering how many spin off games she got
Topplegeist: there definitely is a white+something graveyard matters deck in here
Players have already come up with methods of summoning 10,000 tokens, playing every Land card in your deck, and instantly defeating every other player at the Commander table
Cards have specific effects when played from a players hand or inked into their well to cast more powerful cards, as does Questing for the TCGs winning resource
As the name suggests, you should start here and not worry about anything else until you know whether you enjoy and want to get more serious about playing the game or collecting the cards