Some cards might not look like wincons at first, but they steal games against certain decks or serve as key sideboard options that swing specific matchups
For example, if you exile Twincast and Lightning Strike, you can cast Lightning Strike and then cast Twincast targeting it, but if you exile a creature card and an Aura card, you can't cast that Aura targeting that creature
One problem here is that this is really boring, and another is that its really vulnerable: Killing your Commander 2/3 times slows down the combo, and if you only have one or two ways to win the game, its not that hard to stop them all from working
Green Green is the best color in Commander
If you need it as your commander, you can borrow unused copies from other players in the draft, your own collection, or anywhere else