The first wave of promo cards can be identified by their set number P1 and a unique logo in place of their rarity icon, indicating which event the promo card was available at
Every booster pack contains the following: 6 Common Cards 3 Uncommon Cards 2 Rare or Better* Cards 1 Foil Card of any Rarity The Rare or better cards have a chance of being Rare, Super Rare, or Legendary, but will never be Enchanted
Man-To-Man takes aim at Peter Pan cards making them lose their Evasive feature
[8] Set: D23 Promos Rarity: Promo While there are other cards named Elsa - Spirit of Winter, this Enchanted card has alternate art and holographic foil
But if your opponent plonks one of these down, you're going to want to kill it off as soon as possible - you just know they'll have some way to give it trample
Market is around $25, and that seems to be the price you're looking at right now as well