_RefMagicOptByItemOptLevel
This query should help you understanding how they're connected with devil's item object:
Code:
USE [SRO_VT_SHARD]
Select roc.CodeName128, mgopt.*, mg.MOptName128 from _RefMagicOptByItemOptLevel mgopt join _RefMagicOpt mg on mgopt.RefMagicOptID = mg.ID join _RefAbilityByItemOptLevel ab on mgopt.Link = ab.ID join _RefObjCommon roc on ab.RefItemID = roc.ID and roc.TypeID1 = 3