Tired of the old snowballs?Well if you install this machine into your world,snowballs you fire will become fireballs!!!!

Instructions
Give yourself a command block with this command:
/give @p command_block
Make a redstone clock.Attach the command block to it,paste in the command,and then,bam!!!
You have yourselves fireball snowballs!
You can change the explosion power for, different intensities of explosion.

Click me for command