我来判的话,统统不行
overchannel的描述是“while manifesting a power,……”
changeling egoist的描述是“whenever a changeling egoist manifests a psychometabolism power……”
然而manifest metamorphosis这件事本身对于一个5级的心灵术士而言是办不到的;“a psion can manifest any power that has a power point cost equal to or lower than his manifester level.”
所以我的判断是先存在“manifest a power”,而后才有“when manifest a power,……”,以上

唔,换个例子,如果把overchannel的描述改一下
“While you manifesting metamorphosis, you can increase your effective manifester level by one, but in so doing you take 1d8 points of damage.”
就会变成这样……我理解这句话的意思是必须展现了metamorphosis才能得到overchannel的效果嗯