Screaming = causes monster to flee 25%. If you instead meant Grinding (.75 max damage per clvl), it's in the same affix group as cruel, so they can't spawn together.
The clvl requirements for the affixes you listed:
Screaming: 7
Cruel (rare-enabled version): 48
Master's: 48
Mechanic's: 7
of Quickness: 38
of Vileness: 6
of Transcendence: 68
of the Lamprey: 43
of the Vampire: 48
The level requirement of a rare item is:
max(highest_affix_req, base_item_req) + req_adder
req_adder is normally 0 but is incremented by 5 for a normal->exceptional upgrade and 7 for an exceptional->elite upgrade
That means that, for any combination of the above that doesn't include "of Transcendence" (but which does include one of the clvl 48 requirement affixes, like cruel), the following still applies:
A phase blade found like that would require clvl 54+ to use (and there's no way for it to be ethereal).
A dimensional blade upgraded to phase blade would require clvl 59+ to use.
A crystal sword upgraded to dimensional blade and then to phase blade would require clvl 66+ to use.
If it does include "of Transcendence", the numbers are a bit higher:
A phase blade found like that would require clvl 68+ to use (and there's no way for it to be ethereal).
A dimensional blade upgraded to phase blade would require clvl 73+ to use.
A crystal sword upgraded to dimensional blade and then to phase blade would require clvl 80+ to use.
The clvl requirements for the affixes you listed:
Screaming: 7
Cruel (rare-enabled version): 48
Master's: 48
Mechanic's: 7
of Quickness: 38
of Vileness: 6
of Transcendence: 68
of the Lamprey: 43
of the Vampire: 48
The level requirement of a rare item is:
max(highest_affix_req, base_item_req) + req_adder
req_adder is normally 0 but is incremented by 5 for a normal->exceptional upgrade and 7 for an exceptional->elite upgrade
That means that, for any combination of the above that doesn't include "of Transcendence" (but which does include one of the clvl 48 requirement affixes, like cruel), the following still applies:
A phase blade found like that would require clvl 54+ to use (and there's no way for it to be ethereal).
A dimensional blade upgraded to phase blade would require clvl 59+ to use.
A crystal sword upgraded to dimensional blade and then to phase blade would require clvl 66+ to use.
If it does include "of Transcendence", the numbers are a bit higher:
A phase blade found like that would require clvl 68+ to use (and there's no way for it to be ethereal).
A dimensional blade upgraded to phase blade would require clvl 73+ to use.
A crystal sword upgraded to dimensional blade and then to phase blade would require clvl 80+ to use.