Winterspell transforms Lorcana’s Boost mechanic into a meta-defining strategy

One of Disney Lorcana’s most underutilized mechanics is Boost, a keyword mechanic that lets you put the top card of your deck facedown under a character when you pay its boost cost. Originally introduced in November 2025’s Whispers in the Well set, there are only 18 characters with Boost and another handful of characters or items that interact with it. That’s all about to change when Winterspell launches later this month.