Another axed mechanic was dropped as putting "all the burden of dealing with your evilness on the opponent wasn't as inviting as we wanted our set to be," an apparently these battle cards were turned down for a similar reason
If it helps, think of Items and Characters as similar (Game changing, multiple use), and Actions and Songs as similar (one-use, instant, discarded immediately after use)
Elsa, Snow Queen is one of those elusive cards, which features the D23 Expo stamp at the bottom of the frame and the special Enchanted foiling process that wouldnt be seen until the Rise of the Floodborn expansion
Several powerful spells and abilities that have different versions with varying strength or function are represented in this release with the tiered mechanic
In a multiplayer game, if creatures you control deal combat damage to multiple opponents at the same time, the last ability will trigger multiple times