The Ursula, Deceiver of All variant visible below is the Enchanted version of the card, showcasing the alternative artwork and borderless artwork offered by the highest possible Lorcana card rarity, identified by its rainbow hexagon symbol and estimated to only appear in roughly one in 100 booster packs
While there may be similar cards with individual advantages, such as Emrakul, the Aeons Torn for its game-ending power or Kozilek, Butcher of Truth for card advantage, Ragnarok's versatility and potential to generate value consistently make it a strong candidate for certain strategies, particularly in midrange or control decks where its varied abilities can be effectively leveraged
It also helps that Elsa is one of the most beloved characters in the Disney roster - her promo far eclipses the value of other D23 promos
Its perhaps also a reflection of how this particular incarnation looks, from a stats point of view
Like any strategy revolving around graveyard interactions, this build is pretty easy to sideboard against