Mid-Range with playtest wins over all the popular formats.

Opening Hand Focus

-Mono Red Aggro - Fountain of Renewal + Amaranthine Wall

-Golgari Midrange - Transmogrifying Wand

-Boros Midrange - Mishra's Self-Replicator

Combos

Crucible of Worlds + Field of Ruin over and over and over

Mishra's Self-Replicator + Helm of the Host

Traxos + Helm of the Host - So many 7/7s on historic marching orders