Board Thread:Theories and Speculation/@comment-1512913-20161119171442/@comment-3568954-20161208151934

according to gaara hiden. joining two kekkei genkei together creates a Psuedo Kekkei Tota, the requirements are simple. it was stated that Ohnoki has a kekkei tota because he has an affinity for 3 nature transformation

also if you base it on the definition Affinity. affiity is defined as a spontaneous or natural liking or sympathy for someone or something. a relationship, especially by marriages as OPPOSED TO BLOOD TIES

this means it is not limited to bloodline Mu and Ohnoki are not related and there is no indication that any bloodline is required. with Kekkei genkai we have the term LIMITED meaning it is limited to people within a bloodline but selection implies that Ohnoki was CHOSEN to learn the technique.

and the requirement to be chosen is that thhe person has to have the affinity to earth, wind and fire. this would meet the defniition of BLOODLINE and SELECTION ie Mu found a person whose bloodline granted them an affinity to earth, wind and fire and so he selected Ohnoki to learn the technique so if my hypothesis is correct. then in theory Ohonoki could teach it to anyone who has an affinity for those three natures as for combining two different kekkei genkai like i said it was stated in gaara hiden that doing so only creates a psuedo kekkei tota

as for merging the three natures together. people got to realize that it was stated as you do something it gets easier to do. for example naruto originally needed a clone to add wind release. he no longer needs a clone to even create a rasengan. notice that naruto and sasuke didn't even need to weave hand signs to do jutsu by the end of the war. its possible that Ohnoki only needed to imagine the change in chakra nature and do the required hand signs.

another option is a two fold change. he could start off by combining earth and wind. then once those two merged to create a brand new combined element and then molded the combined element with fire to create Dust release this would be pretty simple really. all one would have to do is mold two elements then transfer the new element to one hand and then do add fire to the other hand and then mold them together again.