en 1.9 and up /execute Game mods

• If have beefy computor (Really Good) then change the second to last 10 to 100.If too laggy then change the 10 to 2-4.
• You can change the particle into other particles by changing flame to any particle {EX: reddust } to get a rainbow effect
• You can also change @p to your username to only give it to yourself  
  

*NOTE* If you are in version 1.9 and up you can change the command block settings to (Repeat) (Unconditional) (Always Active) Not too laggy. Have a nice day :)