I take no credit from this i just wanted IJAMinecraft to get more popular because his commands are crazy cool! Please don't think that im saying that i made this because i didn't! I didn't even help with one little word! Just check him out and have fun!
To make it work:
1. Place down the cauldron and throw the gold block in it.
2. Throw gold ingots in it to get Lucky blocks (they are spawn eggs)
3. Place the Lucky Blocks (spawn eggs) down and break them!