I assumed one thing similar. Even so runes are unable to exist inside a vacuum can they? They must be engraved on something. But on foot the smiths/lords will not habe something but their hammers. I imagine a rune smith's runes are an identical detail: tiny, probably octagonal gromril tokens https://magicwithrunes13468.blogadvize.com/28077893/the-2-minute-rule-for-magic-runes-anime