@FHillz Ooooh, slick naming. Now that we have sleep as an actual term this works, but I'd still try to fit in until the end of your opponent's turn if you can. I don't necessarily think losing taunt on combo is a necessity, it may need to be one or the other.
Thank you for your feedback (And other guys as well)
The point of this card is to punch a minion so hard it faint for a turn, so it can't really do anything including taunting. I'm considering about the effect and make it more extreme like "silence it for a turn". That's why I tune down the damage to 1 and not 3 like Frost bolt since they're somewhat similar. I'll also try to add in "until the end of opponent's turn" like you said.
I've had some ideas but this is the one I personally like. Sorry the card didn't make it clear, the minion will fall asleep until the start of your next turn. Meaning it can't attack even after you end your turn (kinda like freeze). Please give me your thoughts.