You won't find value in it every game, especially if you're effectively controlling the board with all of your direct damage tools, but if you find it at just the right time you can gain a two, three, or even four lore instantly, which is often enough to close out a match in a deck like this
Inside, Guests are shown 4 cards that they must collect in order to redeem for one of the two cards exclusive to that event
Drawing two cards at sorcery speed is worth 3 mana (Divination), but drawing two at instant speed typically costs 4 (Glimmer of Genius)
Just by being on the board, she gives all of your other character cards Ward
Since this is the first Action card weve seen, any information derived is purely speculative, but its likely that actions are similar to instant and sorcery spells from Magic: The Gathering once played, an effect happens and then they immediately go to a discard pile or graveyard equivalent