stats for Skills - passive/active
gradeExpertiseLevel
ExpMultiplier
SpMultiplier
RaidExpMultiplier
RaidSpMultiplier
ItemDropMultiplier
AdenaDropMultiplier
SpoilDropMultiplier
SealStonesMultiplier
EnchantBonusMultiplier
EnchantSkillBonusMultiplier
EnchantBonusMultiplier - 1.05 = 5%
About Summon NPC item - look on item <etcitem id="5561" name="Special Christmas Tree">
And on skill <skill id="2138" levels="1" name="Summon Special Tree">