Hearthpwn

In The Witchwood it's worth considering Prince Keleseth because the loss of Netherspite Historian makes 2 mana cards expendable. However, you can also find a non-prince version of the list here:
https://www.hearthpwn.com/decks/1062668-witchwood-spiteful-priest

Early results have been very good. Went 12-6 and climbed to rank 4 as I refined the list.

The basic gameplan remains:
1. Begin to create board pressure on turns 2-5.
2. Duskbreaker on turn 4 if necessary.
3. Spiteful Summoner on turn 6 (or turn 5 with coin).
4. Nightscale Matriarch on turn 7 allows you to generate additional pressure.
5. Alternatively use Twilight Acolyte and/or Wyrmguard to slow down your opponent.

Key new additions include:
1. Scaleworm makes an immediate board impact prior to the Summoner turn.
2. Nightscale Matriarch is an activator in hand and a minion generator after play.
3. Wyrmguard is another great followup to Summoner that blocks your opponent.

Mulligan priorities:
1. Prince Keleseth
2. Northshire Cleric
3. Duskbreaker (vs aggro/midrange) - consider keeping a dragon too
4. Spiteful Summoner (vs control/mirror or with coin)

Alternate cards to consider:
Curious Glimmerroot - a reasonable 3 drop
Stonehill Defender - an early taunt and value generator
Tortollan Shellraiser - another taunt option that can buff other minions
Witchwood Piper - helps draw Northshire Cleric or Prince Keleseth
Bone Drake - a decent dragon and value generator

Have fun summoning victory!
BlueSpartan