Like how 
etc. make a noise or statement everyone on the map can hear. If your favorite champions don't have one make one up or add one if they do have a global.
Mine would be:
His ult can be heard by everyone
If you step on a mushroom, you hear his laugh.
You hear his maniacal laugh and some stray screams when he ults.
has a global Recall announcement, at least for her team
when he kills Riven, everyone hears him yell, "Vengeance!" or maybe "Atonement!" or "My honor has been fulfilled!" or something along those lines.
when he kills someone the enemy team hears "another falls to the shadows"
When he raises a tower you hear him say something like "Shurima will rise again"
When he gets a Pentakill you just hear Draven say "I am perfection"
What are you talking about, mine does
Sona: "..."
: When he gets a kill he says, "Bring in the next challenger!"
: if at least one champ is low enough to be killed by his ult, you hear whetever quote he is saying globally. Or if he is pentakill karth, you hear "I AM THE LIGHTBRRRIIINNNGGGEEERRRR!"
: Global JUSTICE!
: His laugh when he ults is heard by everyone.
: COOOOWWWWAAAAARRRDDDDSSSS! Globally
: IF he has like 400 stacks, maybe you hear mystical chanting when he is in his ult.
