Q: Does Silver Lining neutralize War if it is on the table, so that I can win with Peace No War?

A: Peace No War specifically calls out War as a prohibited card to meet the win conditions. It’s not the fact that it’s a Creeper that’s preventing you from winning – it’s that it’s War specifically, which is incompatible with Peace. In fact, in previous editions of Fluxx, it was a Keeper, not a Creeper, and the conditions were the same: you can’t win if War is on the table.