Is it possible to 'unlock' a lever when 'x' conditions are met? My friends and I are making an escape style map, and when 5 blocks are activated, I want the previously useless lever to 'unlock' and for the exit open. I don't feel like running Redstone the entire distance of the map. Thanks in advance
I would use a command block with /setblock x y z minecraft:redstone_wire to complete a circuit. You could have five segments of redstone dust that you place this way.
As a word of caution, you might run into an issue I recently posted about, where I suspect that the block doesn't get placed in a way that makes sense if the chunk isn't loaded (in your case, the chunk with the final switch). You can, however, keep the chunk loaded by running a redstone clock in it, I think, so that may be a way around that issue.