The Undead King

Wombo combos

When u have to discard or send a monster from deck to GY, prioritize Wightbaking over Wightprince (but remember that Wightbaking only works once per turn) 

When Wightbaking activates, you should always add to your hand Wightprince and Wightlord/King of the Skull Servants unless u already have a Wightprince already in your hand to discard. Sometimes, Wightprincess can be a good option as well.

Where Arf Thou: very good for adding Wightbaking to your hand to protect King of the Skull Servants on the field, or to add Wightlord to your hand to boost your GY

Jack-In-The-Hand: i like it because its thematic and because we have a lot of level 1 in our deck. Its unlikely that this card will not come in handle. And i doubt the opponent could use our Skull Servants in any way (we can also chain Card Destruction)

Wightmare and The Lady in Wight: prioritize banishing the Lady if you can, then summon her using Wightmare. The Lady will protect your King from effects

Wightprincess and Wightlord: allways discard Wightprincess using its own effect to power up Wightlord effect and boost your GY even more

In case the King is already on field and Wightlord is in the graveyard, use Wightlord effect to remove himself from the GY to special summon The Lady in Wight, she will protect your King from effects

Painful Choice (But not for me!): the right choice depends on your hand, but the optimal set is selecting 3 Wightprince, 2 Wightprincess and 1 Wightbaking. Just avoid declaring Skull servant or The Lady in Wight, as u need them in your hand or deck to use Wightprince effect. Even if the opponent is smart enough to choose the Wightprince, 2 Wightprince and 1 Wightbaking are going to the GY. An optimal use of this single card allows you to fill the GY with 11 monsters (3 Wightprince, 3 The Lady in Wight, 3 Skull Servant, 1 Wightbaking and whoever u want to discard thanks to Wightbaking

Happy necromancing!