If the target creature is an illegal target as Narset's Rebuke tries to resolve, it won't resolve and none of its effects will happen
That her food happens to be some of the best in the city is, in her opinion, added proof of the righteousness of her mission: to cook for the people
All this protecting and token flooding is going to need a purpose however, if were not winning through repeated alpha strikes
Unless theyre running Helm of the Host, which safely creates a nonlegendary copy of the equipped creature that you can swing at a second player
All that really matters is that, to Sliver Queen, every Sliver was her child, and she loved them all
Regardless, it is one of the most valuable cards in TCGs history