Hey there, in this tutorial I'll be explaining how itemsets work and how you can make your own.
Basic knowledge about editing DBCs and packing MPQs.
DBC Editor (Preferably Taaliis)
Before we start messing with any DBCs you'll need the items that will make up your itemset, obviously. For this tutorial I'll be using 'Recruit's Boots', 'Recruit's Pants' and 'Recruit's Shirt' just for simplicity's sake. When you have found/made your items, head into your dbc folder and find itemset.dbc. Open it up, create a new row and then edit these columns to your liking:
#0 - ID (Unique Identifier)
#1 - Name (Self explanatory.)
#18-25 - This is where you put your items entries. (In my case I'll only be using #18-20 since I only have three items in my set.)
#35-42 - This is the actual setbonuses, the spell entries. (You can find spells in your spell.dbc or simply browse wowhead.)
#43-49 - This is the number of items required for each setbonus. (2,4,6,8 etc...)
That's it for the DBC. (Don't forget to put the DBCs on your server and pack them into your MPQ as always.)
The last part is to add the itemset IDs to your items in the database. Here's the query I used:
SET itemset = "902"
WHERE entry IN (38,39,40);
That's it for this tutorial. Itemsets are very basic as you might have noticed, but I hope this will help some of you beginners out there.