While this would be nice to keep prices down, realistically, its far too early to tell
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
When I factor in that a couple CE/IE copies of Volcanic Island sold on eBay in the low $300s over the past month, and Im confident this purchase will result in a modest profit
Its a way to buff your creatures and defend them at the same time
If the creature this Aura would enchant is an illegal target by the time Knightly Valor tries to resolve, the Aura spell doesn't resolve
Mirrodin Besieged Bonehoard Flayer Husk Skin Wing Living weapon was the first named mechanic where tokens were a core part of the mechanic