Dark Wizard T3 shades work with Spiritmaster + Spirit Witch abilities :)

[Phoxly]

Hand of Darkness: Summon a hand of darkness which slams into the target 500-cubit area. Deal 200% Magic damage to enemies within, and reduce their Physical Attack and Magic Attack by 20% for 10 seconds. For each enemy hit, summon a T3 Shade for 20 seconds.

This works great with Nameless if you go Spiritmancer + Spirit Witch. With just 2 or 3 Dark Wizard Apprentices and a couple Summon + Wizard focused heroes you can have some massive combos.

If you've ever wanted to RP being a necromancer with an army of 100 shades I definitely recommend it. (Unfortunately I don't know a consistent way to get these wizards aside from being lucky with mercenaries)