[3.5] Monster Build Advice

[Thurbane]

Hey all,

Looking for thoughts and input on a "monster build" - I'm making a "static" villain who lives at the heart of his dungeon (and is master of the dungeon). Here's the stub I have so far:

Gravetouched Ghoul Mimic Aberration 7/Tomb Warden 3/Dungeon Lord 5
CR 4 + 1 + 8 = 13

Str 24 Dex 20 Con -- Int 15 Wis 16 Cha 18

1 Fiendish Heritage
3 Toughness
6 Fiendish Presence
9 Fiendish Legacy
12 Improved Toughness
15 Ability Focus Paralysis
B Leadership

Thoughts?

Cheers - T