[She nods in approval.] And remember that in basic mixing of runes, especially for elementals, you can have various results depending on which rune you give the priority position.

You want lava? The focus is on the rock, not the fire. You want earthquakes? Same thing. You want steam? Priority is the water for the vapors. Remember which element should be the focus of the inscription and which ones should be the support runes and you'll have less crazy outcomes.