Khaldor made a great video demonstrating a way to Spell Cast EXTREMELY fast! However, some have been asking if his method can be applied to Multiple Spells. Here is his original video using only ONE hotkey at a time for Ability Spamming:
Here is my video, demonstrating how to use this same HotKey Trick, to spam MANY Abilities/Spells:
Hope it helps!
EDIT: I made this a separate thread because this video demonstrates how the same technique, when used with the GRID HotKey layout, is not limited to just ONE ability. eg. Spawn Tumor.
I would love to hear if this applies to the other races as well. I only play Protoss, and seems like all the "Spam" Abilities are on the Z key. Wonder if it is the same for Terran and Zerg. I think it might be.....
Just found another interesting function of this Trick: If you do not want to "Spam" the ability, want to cast only once, hover your mouse over the desired spell location/unit and double tap the key on the keyboard. Even if you do not want to spam Abilities you can single cast without clicking the mouse button. Not sure if that helps with anything... Just thought you would like to know.