Valkyrie's Call gives you some resilience when your creatures are removed, and Dour Port-Mage combines a leaves the battlefield trigger with a self-bounce option
And in a chaotic game, the exact details may be forgotten, leaving Feather open to be better than she appears on paper
The not-quite-Lifelink is equally important as a Voltron Commander may find itself in a race to the finish line, and gaining life against other decks that also look to win through damage is paramount
They are great together as they often help each other out
Not the strongest of removal spells, but Self-Destruct is great at sacrificing a creature thats already about to die, and you might even have some fun with Jumbo Cactuar
There are quite a few cards with abilities that only work when your opponents lose life, especially in the command zone