Wands at the ready.
Scared, Potter?
You wish.
On the count of three,
cast your charms to disarm your opponent. Only to disarm.
We don't want any accidents here.
One...
two...
Everte Statum!
Rictusempra!
I said disarm only.
Serpensortia!
Don't move, Potter. I'll get rid of it for you.
Allow me, Professor Snape.
Alarte Ascendare!
[speaks in Parseltongue]
Vipera Evanesca.