Typical CW forget what happened in the past and just make up things as we go along.
That happens everywhere.
So far, we saw what I suppose was the power of Mallus come down and resurrect Damien, so I don't think it's wrong to assume that Damien is channeling Mallus' power.
On the other hand, they've said that Kuasa has somehow integrated the water totem into herself, so maybe Damien did something similar.
Those are all as good reasons as any! LOL
Which means Darkh's daughter Eleanor probably got her magic from Mallus too.
But, is Rip gone for good or will he return at the end of the season to help defeat Mallus?
It's important, because ratings indicate this will be the last season of Legends.