Crown and Vara deck!
Dark Return, Haunting Scream, Twinning Ritual and Burdenbearer Wisp to keep casting Vara, Vengeance-Seeker
Crown and Warleader for a more dangerous kind of Vara.
You can use Wisp to put a Haunting Screame'd Vara or regular cast Vara back into your hand, to keep casting.
There are several flex slots I am open to suggestions about, the Eilyn's Intervention, Void Drummer, Sandstorm Titan VS Sabertooth Prideleader. Market flex slots = all of them essentially.