Dovid giving your opponent stunned creatures isn't a bug, it's a feature!
This deck counts on stun synergy to put more beef on the battlefield than an opponent can deal with. Play aggressively. Be willing to trade your 1s and 2s to prevent your opponent chump-blocking something big later.
Certain enemy cards like
Moonstone Vanguard are an auto-lose if not answered. Hold on to a
Sharp Tactician, Edict, or Maveloft Huntress (with a imbue buddy on the board) to prevent cards like this from just "nope"ing your winning position.
Be mindful of which of your units activate on ANY stun, and which require an opponent's unit to be stunned. There are some interesting interactions with the fast-speed stuns provided by
Frost. There are other fast stuns which might work even better, I haven't tested them all. I'd be glad to hear your experiences in the comments if you tinker with it. Have fun!