A powerful card with a supremely expensive cost. Most people will say "Why bother?" and if you are designing your deck in a vaccuum, it probably will be over looked for some other great toys.
But in multiplayer, you can be the supreme support character with a copy or two of this. If you can stomach the xp cost, this card will make your Guardian and Mystics more consistent, allow your Rogues to pull that game breaking combo or just save someone's skin at just the right moment.
Really, this card feels maybe 1 xp too much, but it also is pretty amazing. Fast, during anyone's turn find the solution to a problem for just two resources.
It is hard to argue with it. I think if you are leaning more into a support role, this is your endgame. This card will make your team love you and will allow you to pull some of the best tricks the game can offer.
So yeah, support/10. I think its a home run in multiplayer.