Item that lets the player move a block

So, the title might not me exactly clear. What I'm trying to make is an item, that when right clicked on a block, it removes the block it was right clicked on, and when right clicked again it places the block it "picked up" at about 4 blocks where the player is looking. I've tried to use local variables, nbt tags, global variables, multiple procedures but nothing seemed to work!!!

I hope it's possible, because I want to make it so bad.

Please help me!