I Cast Fireball
A wizard yells 'I cast fireball!' and then everyone in the room gets roasted like a thanksgiving turkey. It doesn't matter if you're on the same team or not. You're all getting burned.
'I cast fireball!' screamed the wizard. The whole party got burned. Even the goblin who was about to stab him got burned.
'Fireball!' he said. Then he realized he had no idea how to aim. Everyone got burned. Even the dog.
'I cast fireball!' The wizard didn't know where he was. The whole room got turned into a BBQ.