I built a deck around the Spellslinger option which was published this week (You can check it out here)
For acceleration, the classic mana dorks will do (Elvish Mystic, Llanowar Elves, Fyndhorn Elves, Circle of Dreams Druid, etc.)
Its a single Selesnya commander that can buff your creatures, create tokens, and even sacrifice itself to protect your tokens with hexproof and indestructible
Its an economic hub for players to stock up before setting out
There are still a lot of common abilities that are brand-new to me scry, flash, lifelink, this thing where I earn the citys blessing, legendary cards that have four different potential abilities but most of it gets helpfully defined simply by right-clicking on a card