Attribute transfer is a form of crafting where
1.Source item attribute X
2.Is transferred to Target Item, or added to existing attribute.
3.Ingredients/resources are spent.
Sword with attribute of "+10% to attack speed", is transferred to a Ring at cost of
100 shards of amber. The ring is now with the attribute but the sword is without it.

Adds flexibility to item choices, allowing to combine items attribute into a new item. May create ultra-powerful item at the long-term, so cap on number of transfers(e.g. max 10 transfers to/from target) may be useful.