Spells: Grim Aura unusable by SK

[Kavious]

Velious will go through a patch cycle. We are in Dec 2000 era the spell change for this happens in Feb 2001 era

Theres actually numerous spell changes that happen in Feb 2001 era. Heres the list:

Yaulp IV (Feb2001) updated PAL lvl 255 => 60
Superior Healing (Feb2001) updated DRU lvl 53 => 51, SHM lvl 53 => 51
Spirit Tap (Feb2001) updated SK lvl 56 => 55
Spirit of Wolf (Feb2001) updated RNG lvl 39 => 30
Spikecoat (Feb2001) updated RNG lvl 255 => 49
Shieldskin (Feb2001) updated SK lvl 39 => 34
See Invisible (Feb2001) updated RNG lvl 255 => 39
Resist Magic (Feb2001) updated PAL lvl 255 => 55
Resist Cold (Feb2001) updated RNG lvl 255 => 55
Panic Animal (Feb2001) updated RNG lvl 255 => 22
Jolt (Feb2001) updated RNG lvl 55 => 51
Guard (Feb2001) updated PAL lvl 49 => 39
Grim Aura (Feb2001) updated SK lvl 255 => 22, base atk 5 => 3, max atk 0 => 10, atk formula 100 => 102
Firefist (Feb2001) updated RNG lvl 255 => 22
Endure Magic (Feb2001) updated PAL lvl 255 => 30
Endure Cold (Feb2001) updated RNG lvl 255 => 22
Drain Spirit (Feb2001) updated SK lvl 60 => 57
Drain Soul (Feb2001) updated SK lvl 255 => 60
Bramblecoat (Feb2001) updated RNG lvl 49 => 39
Armor of Faith (Feb2001) updated PAL lvl 53 => 49
Leechcurse Discipline (Feb2001) removed HitChance component