I created a "Lesser Lich" so my party would be able to fight something interesting in the story I have. In my game, a lich undergoes development changes the first time it "ascends(descends) to lichdom." It first becomes a protolich (lowest level) for 1d10 days. This creature is mostly feral, acting more instinctively. It also gains no lich lair bonus. It then becomes a "Lesser Lich" for another 1d20 days or until it makes an appropriate number of sacrifices to its phylactery. This made up stuff doesn't apply to a lich that was already a full lich.
Here is the stat block I came up with:
My question is, is my "Lesser Lich" really a CR 10 (12 in lair)? I used the DMG to calculate, but it was a bit confusing.
Defensive CR 4 (hp 2, AC 10; move 2 up 2, 4)
Offensive CR 16 (this I really guessed on... dmg/round? 50-100?)
average the two: 10
My damage per round, I had to guess. If the lich casts, "disintegrate" it can do a max damage of 100. That's is one big move. If it doesn't... I have no idea how much damage it does in a round.
Sources / Credits
- DMG page 202-203 for Lich base stats
- http://valloric.github.io/statblock5e/ for the statblock template.
addition / edit:
Based on the feedback, I lowered the level of my "lesser lich" to an 8th level caster. This cuts 5th and 6th level spells and lowers the HP to ~74. I also lowered the AC to 15, reduced legendary actions to 2 / turn, and recalculated damage. Based of this, the average damage I got was ~ 57/ round (Blight hitting 2 creatures for average damage, and 2 ray of frosts). All this gives me a def CR of 8(?) and Off Cr of 10(?). CR is 9 out of lair and 12 in lair(?):
Based on my own play test vs a group of 4, the second block is probably a CR 6-7.