LR soulmirror is the latest and also the most powerful soulmirror for all casts. It is now available on global server. To get a LR soulmirror must consume 3 units of UR soulmirror and coins. You can find this new feature in Relic/ Soulmirror/ Fuse. 
Once putting 3 units of UR soulmirror, there will be a result showing what you might possibly get. Please be aware those consumed UR soulmirrors cannot be retrieved.