Atm i can see bot dosent use this card than its available. Lets say enemy has minion on deck 4/3 you have minion 4/3 and 1+ mana left this turn bot dosent shield your minion and passes turn.
So 3 problems with my priest deck so far: 1. Bot do not use power word shield than enemy has no minions on deck; 2. Bot heals sometimes it self after useing Embrase Shadow 3. Bot dosent attack with minions before use of YOG (usually YOG kilss all minions so its better go to face or trade before putting it on board)