What is this mod?
It's an entry for the ModOff contest, built to work on Minecraft version 1.11.2.
What is it about?
This mod adds exactly two items: One spray can to erase non-vanilla items/blocks/mobs and one spray can to unerase them. This was made in an attempt to address the many, many issues of playing in modded minecraft. Chiefly, lag. If too many mods are installed, then lag happens. To make that lag not happen, we must simply remove the modded blocks.
Are you serious?
No. But that's what we're here for, aren't we? To have fun.
Bonus video: