Trogdor would be proud of this one. Scary fast!
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you dont really have any ways to deal damage to trigger the Bloodchief Ascension. I would pull a couple land in exchange for Everflowing Chalice, and probably add a couple milling blockers (halimar excavator, hedron crab) to get you through to turn 5 where the devastation could start.
Celestial Mantle + Felidar Soverign + a little help from Spirit En Dal would go well in this deck also. Almost too easy though...