Impale
Lookdown is what undead needs but due to its high manacost, it is hard picking the CL as first or second hero with impale, so one idea would be, to drecrease all of the stats, damage and stuntime but also lower the manacost to a degree where it becomes somewhat spamable like the tinker rockets.
Something like: 1 Second air time, 2/ 2,5 /3 seconds stun with 7 seconds cooldown and 70 manacost, for example.
Note that warstomp from the TC has a 5 seconds stun and 6 seconds cooldown on level 3. (Which surely should be nerfed)
Beetles
Summonings should be the strongest spells in the entire game, this is the case for water elementals, quillbeasts, lava spawns, (unkilled) pocket factorys and higher level bears and hawks, but not for the beetles, part of the reasons are there melee attacks, and I wonder, if its still a good argument for them, that they do not expire.
There are some ways to buff them, but first of all, it should start with making them far better on level 1, were they have way to little HP and damage.
Level 2 and 3 is kind of okay but still, they just have melee attacks and they are extremly slow without unholy aura. So in my opinion, these are the best buffs for them:
- Spiked carrapace gives magic damage and dispell damage reduction by 33/66/100%. So you can decide if you want stronger beetles, or full magic immunity.
- Increase there movement speed by alot, so its actually possible to set up surrounds. (which wouldnt make much sense without dispell resistance tbh.)
- Make them explode like banelings (so surrounds would make sense)
- Give them other great abillitys.
Spiked Carrapace
Literally the worst passive in the entire game, its okay for a third hero but in the end, it can be ignored, so my suggestion is, to utterly overbuff it.
Like this:
-It gives: 3 / 5 / 7 armor and the usual thornseffect.
And on top of it 3 / 4 / 5 HPs regenaration and because this one can still be ignored, it also gives +3 / 6 / 10 to all stats and 5 / 10 / 15 bonusdamage.
Of course this sounds extremly good but so are all of the auras, critical strike and so on and this effects work only on himself.
With this buff, you can actually think of, taking the passive first for creeping and regenarating and the stat bonuses help with the high manacost for the impale and beetles.
The Cryptlord would more and more become a one man army with higher levels, as all the agility based heros, so he would fill a niche for the undeads.
Locust Swarm
Its one of the better ultimates in the game, so its probably okay how it is.
Lets say, impale becomes spamable and spiked carrapace buffed as suggested, the cryptlord would have great synergies with all of the items he can find, if its surivivalbillity or damageoutput and if he gets ignored and the enemy starts to snipe units, the CL can safe one here and there with his impales, thats basically the idea behind it.