smoky jungle
A glyph that when placed directly after an amplify, split, or AOE, would pause the flow of the spell while you hold down the cast key. When the key is released it will act as between 0-4 copies of the glyph preceding it, depending on how long you held down the key. Holding the spell drains mana.
This would be an incredibly useful tool for cramming just a few more modifiers into a spell, or creating a delay that can be lengthened on the fly, or for feeling cool while you charge your super mega ultra blast in front of a hapless zombie who can't do anything to stop it.
honest trellis