I just tried out Darklord Monarchs. In theory they work REALLY well. Valhalla lets you special summon monsters from the hand, monarch draw engine/fodder plus domain and march lets you keep them on the field when tributed, and allows access to monsters like vanity's fiend and athena. Plus they all have better attack stats than monarchs so they can beat over some cards they can't. But the problem is my luck is so fucking AWFUL I kept drawing brick hands. I won two duels. One against some crappy crystal beasts, and one against artifacts. I won't count the lightsworn felgrands because they milled shit and it was the same guy who played the crapstal beasts. And no I don't got anything against CB I love them myself and play them I hate when people don't know how to play them properly.