Please post a more informative and at least related to the topic, title.
db/skill_nocast_db.txt
// Forbidden Skills Database
//
// Structure of Database:
// SkillID,Flag
//
// Legend for 'Flag' field (bitmask):
// 1 = Cannot be used in normal maps
// 2 = Cannot be used in PvP maps (use this instead of 1 for PK-mode servers)
// 4 = Cannot be used in GvG maps
// 8 = Cannot be used in Battleground maps
// 16 = Cannot be cloned (clones will not copy this skill)
// Restricted zones - they're configured by 'restricted <numbe' mapflag
// 32 = Cannot be used in zone 1 maps
// 64 = Cannot be used in zone 2 maps
// 128 = Cannot be used in zone 3 maps
// 256 = Cannot be used in zone 4 maps
// 512 = Cannot be used in zone 5 maps
// 1024 = Cannot be used in zone 6 maps
// 2048 = Cannot be used in zone 7 maps
//
// Example:
// 8,6 = Endure cannot be used in PvP and GvG maps (2+4)
<skill ID>,<Flag>
462,4 (Kaziel Skill ID, 4 (For GVG Maps)