Yet as far as we know none of the "old god's powers" manifested themselves inside ICC, other than Yogg-saron's ability to look inside of it. And it could be a case of "recurrent dev memory" where they heard it somewhere and decided to stick it somewhere else... The people that code and name items could be completely separate from the people that write the lore. For example, there was an item that drops from Ossirian the unscarred named "Helm of domination..." I very much doubt it has anything to do with the Lich King's helm of the same name.
But I digress.