Joel was shocked to see the rune appear out of nowhere, but he had learned not to ask Raze too many questions. Every time he asked a very sensitive question, it would always piss Raze off.
The rune in Raze's hand was a long piece of red paper with the rune drawn in black on it. Raze looked at it just to observe it—he liked the way it looked, and it was also not done on yellow paper but red.
It was a higher grade of rune paper and could withstand more of the rune tension. When runes were drawn, every rune had its own tension, and so it added that tension to the material.
So when multiple runes were drawn for a specific result, all their rune tension was placed on the paper, and the paper or material had to take all that tension and not get destroyed.
If the tension of the runes was bigger than what the material could take, the material would shatter under the tension.