That's not a possibility with Amalia as your commander, but lifegain usually comes in multiple small triggers, so it's not inconceivable to grow Amalia in Commander either
So the trust that we built with Disney [...] I think allowed us to come to a point where we both strategically, commercially had the trust to say, Yeah, lets dare to do this together. The first seven cards feature Cruella De Vil, Elsa, Captain Hook, Maleficent in dragon form, Robin Hood, and Stitch
He FORCES your opponents to waste resources, he is a key stax piece for resource denial, forced resource mis-management, and he can also allow for your beaters to stick around more, by forcing removal spells to be used on him instead of something like Consecrated Sphinx or similar
You can also add up to two more friends with decks to your side, for a total of four players
This is particularly true in games with as many moving pieces as Magic: The Gathering