[@Fury Panda]

Well, I wouldn't say "lock" but a good mage could cancel them out yes

And even so he isn't undefeatable even with the runes, when switching between them, there's a period of a few seconds where he cannot use them, and using them does tire him out after prolonged use. Even without exploiting their weaknesses, his attacks can be blocked, his ranged attacks can be dodged, and the flash rune can be evaded by just looking away, he's not unbeatable in the slightest, especially considering he's not even that good a swordfighter.

I like the dwarf historical flavor!