Cards from both sets can be used to create decks, following the normal deck creation rules of a minimum of 60 cards, only cards from up to 2 Ink types can be used, and a maximum of 4 of any one card
(exp September 1, 2030)
These special cards will also have the signature of the animators, and a holographic foil treatment
Elsa - Spirit of Winter also has a nice 3 points of Lore awarded for questing, and has a high Willpower stat of 6, so she can absorb a lot of incoming challenges
You wont always get to play Shift characters for this reduced cost, as youll need to draw and play those base characters first, but its still worth considering whether or not to put Shift characters (or their base counterparts) in your deck
Spreading damage onto your opponent's characters and shifting in a Robin Hood, Sneaky Sleuth on the right turn can help you get a big boost in lore, and spreading out the damage will also help ensure Robin Hood, Timely Contestant doesn't get stuck in your hand