The star of this deck obviously is Lucentbark.

This newly revealed legendary has the deathrattle effect to go dormant when killed, and if you heal for at least 5 health since he went dormant he will wake up again. There are however a few older cards who play very nicely together with this effect:

Play it together with Faceless Manipulator and Carnivorous Cube, and eventualy after a few deaths play N'Zoth, the Corruptor and you could have a nice taunt forest that can be awoken every turn for just a 5 health heal and is a prime target for Savage Roar.

6x Lucentbark = 6 x 4 damage = 24 damage without Savage Roar, or 6 x 6 + 2 from hero = 38 damage with.

Only way to get rid of it would be to silence the first copy, or cast Mass Dispel after the N'Zoth, the Corruptor turn. As Lucentbark is the only decent win condition in this deck, silencing him would end the game for us rather spectaculairly.

Hadronox can serve as a second N'Zoth, the Corruptor, if your opponent managed to silence and clear the first wave.

Since we want a board full of Lucentbark we're not playing any other deathrattle cards besides Hadronox, so a silenced Lucentbark would mean no N'Zoth, the Corruptor value play and no Hadronox value play.

For this reason I included Flobbidinous Floop, so you can at least summon Lucentbark a second time the next turn and try to salvage the game. Ideally follow this up in the same turn with either Faceless Manipulator or Carnivorous Cube.

Everything up to playing Lucentbark is aimed at controlling the board, or at least not letting it snowball out of control, and drawing him as soon as possible. Swipe, Naturalize and Wrath are included to help with this aim.

Naturalize can also be used to kill your own Lucentbark when you first play it, so that N'Zoth, the Corruptor and Hadronox at least have one copy in their pool.

Wrath has, together with Branching Paths, the secondary function to draw more cards, as this deck is dependant on Lucentbark and at least one of the ways to copy him.

Living Roots and Dreamway Guardians can serve as activators for Pilfered Power to ramp up quicker.

Dreamway Guardians, Crystal Power, Zilliax and Ancient of Lore serve as activators for Lucentbark, Crystal Stag and Lifeweaver. To make sure they can heal you, I've included Crystallizer as a way to undirectly damage your hero.