If Flare allows a perk from one item to be transferred to another (with a price, say, 1000 gems), this will add a lot more depth to the game, and will give meaning to many items that are otherwise useless.
To avoid abuse of the transfer, the perk can only be transferred on 2 conditions:-
same item type
a transfer from the same slot, i.e. 1st slot from item A to 1st slot of item B.
For example, a perk from the 1st slot of a ring, can only be transferred to the 1st slot of another ring. This means that a king will still only have the ability to equip just 1 aura ring. The fact that a king will still only be able to have 5 skull perks in war gear will also remain unchanged.
Many items that are otherwise useless can now have their perks transferred to an existing item that are useful. For example, the pro glove with other exclusive perks can be transferred to the pro glove with skull perk after paying the transfer price of 1000 gems.
More importantly, players are able to mix and match and create more combos by finding more items.