Undead mana cost reduction

update spell set `ManaCostPercentage` = 3 where ID = 80134;
update spell set `ManaCostPercentage` = 6 where ID = 80135;
update spell set `ManaCostPercentage` = 8 where ID = 80136;
update spell set `ManaCostPercentage` = 4 where ID = 80140;
update spell set `ManaCostPercentage` = 8 where ID = 80141;
update spell set `ManaCostPercentage` = 5 where ID = 80149;
update spell set `ManaCostPercentage` = 8 where ID = 80150;
update spell set `ManaCostPercentage` = 8 where ID = 80152;
update spell set `ManaCostPercentage` = 3 where ID = 80155;
update spell set `ManaCostPercentage` = 6 where ID = 80163;
update spell set `ManaCostPercentage` = 5 where ID = 80164;
update spell set `ManaCostPercentage` = 5 where ID = 80165;
update spell set `ManaCostPercentage` = 4 where ID = 80166;
update spell set `ManaCostPercentage` = 5 where ID = 80167;
update spell set `ManaCostPercentage` = 5 where ID = 80168;
update spell set `ManaCostPercentage` = 4 where ID = 80169;
update spell set `ManaCostPercentage` = 3 where ID = 80171;
update spell set `ManaCostPercentage` = 8 where ID = 80172;
update spell set `ManaCostPercentage` = 5 where ID = 80173;
update spell set `ManaCostPercentage` = 4 where ID = 80178;
update spell set `ManaCostPercentage` = 6 where ID = 80192;
update spell set `ManaCostPercentage` = 2 where ID = 80193;
update spell set `ManaCostPercentage` = 2 where ID = 80214;
update spell set `ManaCostPercentage` = 8 where ID = 80216;
update spell set `ManaCostPercentage` = 2 where ID = 80230;