Ever since last week, Teamfight Tactics players have been able to play around with the new Sparring Gloves on the live servers. The item component brought with it a slew of new full items too. The Thief's Gloves, created by putting two Sparring Gloves on a champion, seemed particularly popular because of its strangee effect: the champion carrying Thief's Gloves cannot wear any other item.

At the start of a round, when you can adjust your lineup, Thief's Gloves' effect triggers. The champion wearing it dashes off to the side of the board, and returns wearing two additional items. At the end of the combat phase those items disappear, and Thief's Gloves will grant two new ones.

The effect seems to be completely random, but today Teamfight Tactics developer Stephen "Mortdog" Mortimer shed light on the process. The item combinations are are divided between four 'item buckets', which scale in power. Thief's Gloves picks from the more powerful buckets the higher level you are in a match.

Below you can find the item combinations in all four buckets.

Tier 1 item combinations

This is supposed to be the item bucket with the least powerful item combinations between one full item and an item component.

Tier 2 item combinations

One step higher we find more powerful combinations of full items with one item component.

Tier 3 item combinations

This is the first tier where two full items are brought together by Thief's Gloves. However, they are on the lower end of the power spectrum within the 'two full items' combinations.

Tier 4 item combinations

By far the most item combinations—57 in total—are in this item bucket. It consists of the more powerful full item combinations. It's also where we first see two of the same item stacked.