First, you get access to blue and faeries, so this card is also an excellent faerie typal commander
Moving on, the two enchantments I hoped to see from March of the Machine were City on Fire and Tribute to the World Tree
Notably, because walls and birds are worst at blocking large creatures and Wingmantle costs white mana anyway, Destroy Evil is often going to be the best common removal spell, killing big creatures and being one of the best destroy enchantment cards in white
You can only get the lifegain once each turn, but it makes up for that by gaining 3 life when it happens, meaning that this often generates more life than soul sisters in the early turns of the game
Its often mistaken for evil, which indeed many black cards are