A true Angel of Death
But why would I use a healer if I like Jaffar?
And I don't think it's anymore Niche than what he already has. If anything it lets him cover more than what he covers already.
His dagger lets him attack mages safely, Windsweep lets him attack DC units safely, and DC units are a hefty portion of the units in 'PvP' gamemodes. How exactly is making him counter both mages and DC units even more niche than just him countering mages?