I smile at this and attempt to draw out the heating spell. And after several attempts I draw two rough circles of green light one inside the other as I keep my concentration. I write the correct numbers inside and as I draw the last number. I move the small rock I brought with me and put it into the circles and feed the runes my magic the matrix flashes slightly as the rock starts to heat up. And after a minute or two I've used half my mana and cut my connection to the runes, the matrix dissolving into moats of light before disappearing.