Hello everyone! ^-^ Here is my new idea.
"Simple apart, but deadly together." These spells might be a high tier, but learning the combinations can prove deadly useful. They are high tier, around 8-9 because it would be very difficult magic to perform. On to the spells! 
How does this work?
Well, protego is coded with something to detect when another spell hits it, I assume, so why not be able to make a spell that detects another spell hitting it, and if successful, perform another more advanced effect.
I'm sure all of these will have to start out looking like special flares that perform their action upon landing, since they will have to somehow detect each other en' route.
"Aeroventus" will shoot out a small stream of cloud particles, which knockback the target on hit
If two people's "Aeroventus" hit each other, a small whirlwind will form. This whirlwind will pull in players and slightly damage them.
"Pluvius" will create a cloud of rain that slows players in it's radius and deals poison damage (acid rain)
"Pluvius + Pluvius" will create a tsunami that knocks players up in the air and slows them.
"Fulgurius" will create a basic lightning strike.
"Fulgurius + Fulgurius" create a static field that does damage and "shocks" the players screen. (Idk how you do it, but I've seen shaky screens been made. Someone said too many packets, but I don't know how it was done.)
"Fulgurius + Aeroventus + Pluvius" create a large storm cloud that sucks players in, slows them, and drops lightning every few seconds, and lasts around 10 seconds.
As you can see, those are just three examples of spells that could "combine". The possibilities are endless, however I don't know if this is quite possible. Thank you for reading my idea . I would really love some feedback.
