Spectre vs Myx (new edition)
To those saying spectre depowered myx during day of vengeance read.
* Though named as the Earth 1 Mister Mxyzptlk, it seems that it was the Earth-Two version of the character who is apparently killed in Adventures of Superman #646 in the Ruin saga, as he looks far closer and acts far kinder to Superman which is inline with the Earth 2 Mister Mxyztplk.
More importantly, this character is specifically depowered because of the effects done to the Earth universe's magick as noted in earlier Justice Society stories which is the source of Mxyztplk powers.
He also uses the known incantation of the reverse form of his name to disappear from the Earth dimension and return to his home dimension which he does after being shot through his chest.
These conditions specifically contradicts the Post-Crisis version Mxyzptlk who only leaves because he agrees to do so, as well as using some undetermined higher dimensional powers which were not effected by magick or physical sciences from the Earth dimension.
Some suggest that this was really the Earth-Two Mister Mxyzptlk simply using his counterpart's name as this happened just before Kal-L returned to the DC universe due to the Infinite Crisis
So who wins?