Proliferate, eff yeah.
Who controls the token? The way it's worded right now, you can destroy your opponent's creature and then put a toke that's a copy of it into play under your control. The card sounds pretty good too. Makes it so you can go aggro with a creature and then when they do any tricks, destroy your creature and it's ready to go again. Also, like said before, populating would be awesome as well.