In addition to its rarity, Arthur is quite strong, with an ability that is likely to be leveraged by many serious Lorcana players
This is a great card for the early game when you build up your side of the field
All other variants are under $10 with the regular version of Ebondeath priced at around $4
Or are you just some soulless Magic beast who finds fun in trashing others? Unfortunately, for many competitive players, an obviously-one-sided game IS fun to them, while its not very much fun for the other player
This allows you to pivot from an aggressive card-draw strategy to a purely defensive posture, shielding your most vital permanents from targeted removal
On the other hand, if they're removed from combat without leaving the battlefield, use their current information to determine that they're not attacking you or a planeswalker you control anymore