I imagine it is tempo swing for priest (compare to mark of yshaarj), can be used on northshire to become 4/3 if you no longer need the passive (to trade better with zoo/totem golem for example) or destroy any 4 attack minion while silencing it before it dies since priest have no way to deal with 4 attack minions, whilst cycling through your deck at the same time. Wow exciting!!
Behold:
I imagine it is tempo swing for priest (compare to mark of yshaarj), can be used on northshire to become 4/3 if you no longer need the passive (to trade better with zoo/totem golem for example) or destroy any 4 attack minion while silencing it before it dies since priest have no way to deal with 4 attack minions, whilst cycling through your deck at the same time. Wow exciting!!
Silence a friendly minion.
There are too many threads about this topic already.
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