If Knight of Doves leaves the battlefield while it has an Aura you control attached to it or at the same time as another creature with an Aura you control attached to it, its ability won't trigger for those enchantments unless they were destroyed by the same effect that caused Knight of Doves to leave the battlefield
She might not be the best Commander, but she's definitely worth adding to many decks
Well, if you're Olle Rde, the first fan given the chance to design their own Magic: The Gathering card, the answer is: hand in a joke submission that couldn't be printed and then stop returning Wizards of the Coast's calls
But what other features can you rely on
Its a little like when you build a Cube youve curated an environment or vibe, and so you want to communicate that in an easy to understand way
For one red mana at instant speed, your creature gets +2/+0, and a permanent aura which grants a further +1/+1 and Trample, making it combo brilliantly with Valiant, Prowess, and especially both