Since I joined this fandom, I've heard the word 'tulpa' so many times. I didn't think that this 'tulpa' you guys were talking about was really 'tulpa.' I thought it was something else since what I read was something like "tulpa music" etc. Recently I realized that it's really is.
Well, my advice is to be careful guys. Trust me. There are reasons why some spiritualists don't make tulpa. The training itself was meant to build mind discipline and understanding. We spiritualists don't play with it.
Don't get me wrong. I use tulpa just like you guys do, but pretty different (limited). I use one without emotion for practicing martial art. Many martial artists use tulpa for training while they're alone, but none of us gives emotion to the tulpa. We just create an imaginary enemy to spare with, but no emotion. Just that.
Sometimes I create it with weapons, and I myself use an imaginary Dao (broad saber) for it. I know it sounds crazy, and I really look insane while doing that, but it works. I can feel the weight, etc. Sometimes when I lose (lose to an imaginary enemy may sounds silly indeed) I will make it stop, then start again. Just that. Hmm... wait! That means technically I've killed many imaginary people. I'm a murderer! D:
Please be careful guys. Personally, I'm not brave enough to give emotions to a tulpa. I will admit that. There are reasons why we spiritualist don't. That doesn't mean that you shouldn't though. Having an imaginary Rainbow Dash sounds like fun indeed. Maybe some of you understand it better than me, somehow. I'm just worrying about it. Please remember that you have the control of everything related to your tulpa. Always remember it. Some people often forget it.
My advice is, don't mess with something you don't fully understand.