PLEASE NOTE. THE CURRENT DECKLIST IS MEANT TO BE USED AFTER THE MAY 18TH PATCH IS IN EFFECT.
Inspired by a custom Libram Paladin build I was using in Standard, and Dane's build. The deck is highly synergistic and features a very high skill cap. Knowing when to use your libram on your opponents minions, when to cast libram of hope on your own minions, which minions to buff/trade first, calculating hand space, and planning turns in advance.
I've had a ton of fun and success with this build, and I highly recommend that you give it a go.
For the Mulligan phase you generally keep what you'd expect (low cost cards, always keep crystology, Hand of Adal). If you're queuing up against a hunter or a shaman, I'd keep Pyro in the opener. If you're playing a slower matchup and you have a Meanstreet Marshal in hand and a libram of Wisdom, it's ok to keep Aldor Truthseeker in hand (this doesn't apply against mage). Eydis is fine to keep if you have a 1,2 play in hand.
Typically against aggro decks you'll want to use your Libram of Hopes defensively (on your face). However, against slower control/combo decks, you'll want to cast it on your minions. This is important because you get the spells back through Lady Liadrin and they replay on Lynessa Sunsorrow, summoning an 8/8 with taunt divine shield.
Hand management is really important and in slower/value oriented games you can start to cast librams on your opponents minions. I can't really give general advice on when to do this but, you have to be adaptive and react situationally. If you know you have 6 cards in hand and you already have 3 Libram of Wisdoms in play, you don't want to cast more Libram of Wisdoms on your own minions. Look to Mill when possible, and always count the amount of Librams in play.
Use Yogg as a last resort/a calculated coin toss. Some games you may have to just pray to Yogg and hope that he can help you survive a little longer in order to win the game.
Eydis Darkbane can do some really insane shit, but don't hoard her for combo potential. Playing for Tempo, or even just triggering her effect once or twice is fine. In slower matchups, you can save a number of Librams, or do a Liadrin - Darkbane play on 10 mana and deal a ton of damage.
I actually made 1 error in the deck list there, so make sure to use the updated list. There is supposed to Be 1x Lightforged Blessing in place for an Aldor Attendant. Remember that the card combos with both of your Pyros and it also combos well with Eydis Darkbane.