Orcish Siegemaster helps those armies by giving them trample while also getting more powerful as you drop larger creatures later on
Considering the overall play pattern of the deck, this makes a ton of sense
Each Play Booster contains 14 Magic trading cards, with 1 to 4 rares or better, 3 to 6 uncommons, 6 to 9 commons, and one land card
Very flexible, this angel is interesting in Commander because it fits nicely in decks exploiting artifact, go-wide, and token strategies
Cards like Selfless Spirit, Heroic Intervention, and Teferi's Protection help protect your board from a variety of sweepers
I think its most interesting home could be in a Standard control deck, however - in a two color strategy with a solid manabase, this card provides card draw over a few turns , a board presence or a blocker for one life, or a Treasure token to eventually ramp into game-winning spells