Husk Spider (4e Template)
From D&D Wiki
Husk spiders are undead creatures formed from the carapaces of monstrous spiders, animated by dark magic.
"Husk spider" is a template you can apply to any spiderkind beast, such as a monstrous spider or scorpion. A creature that gains this template gains the undead keyword.
Prerequisite: Spiderkind beast
Spiderkind beast (undead)XP Standard
|Draining Bite/Sting ♦ at-will|
|Effect: Level +5 Vs. AC; 1d10 + 3 damage at 1st level, 1d10 + 4 at 4th, 2d6 + 5 at 7th, 2d8 + 6 at 15th, 2d8 + 7 at 16th, 3d6 + 8 at 19th, 3d8 + 9 at 25th and 3d8 + 10 at 28th, and ongoing 5 necrotic damage (save ends).|
|Effect: Any critical hit to the husk spider reduces it to 0 hit points instantly.|