Usually, when a deck is in the in-progress stage, it contains a lot of potential cards that may not make the cut
This could have been a one-off nod to an old mechanic, something WotC occasionally does at mythic rarity
For each, shuffle 1 Pokemon from your hand into your deck.MarlonTrainer SupporterUncommonEffect: Heal 70 damage from one of your Carracosta or Jellicent.LisiaTrainer SupporterUncommonEffect: Put 2 random Basic Pokemon with 50 HP or less from your deck into your hand.HalaTrainer SupporterUncommonEffect: During your opponents next turn, if your Hariyama or Crabominable would be Knocked Out by damage from an attack, it is not Knocked Out and its remaining HP becomes 10
With its color identity, theres only a single werewolf card that you cant use, Suspicious Stowaway
Similarly to Planechase, this is an optional format that needs to be agreed upon by players prior to starting a game