Mentor (You may only have The Librarian in your deck if your hero is young.)
At the start of your turn, if The Librarian is face down in your arsenal, you may turn him face up.
Once per Turn Effect - Whenever you create a Spectral Shield token, draw a card and put a lesson counter on The Librarian. Then if there are 3 or more lesson counters on The Librarian, banish him, search your deck a specialization card, put it face up into your arsenal, and shuffle your deck.
Rune Gate (If you control Runechants equal to or greater than Vantom Banshee's {r} cost, you may play it from your banished zone without paying its {r} cost.)
Blood Debt (While this is in your banished zone, at the beginning of your end phase, lose 1{g}.)
At the start of your turn, destroy Blessing of Aether then if the next card you play this turn has an arcane damage effect, instead it deals that much arcane damage plus 3.