Our own playtesting via playing Lorcana Online has proven it to be a potent combination thanks to the lore engine of both Anna Braving the Storm and Anna True-Hearted
With the creature type Knight and with good Black aggro decks floating around, I can see this being played a lot
This can be seen in pretty much every aspect of the set, from its story to its supplemental bonus sheet
As the second crossover with Dungeons and Dragons, Commander Legends: Battle for Baldur's Gate offers you some iconic D&D characters and locations to go with your usual MTG shenanigans
Bull's Strength is literally the perfect card for the deck
Do note that in a casual game, not only does the four copy limit not apply to Legion Angel (except within your deck, as normal) and nor are there any rules as to where the copy outside of the game comes from meaning you can just pull it from your personal collection of cards, as long as you have them with you), in a Tournament there are restrictions on how Legion Angel works