How would you say does it work with the new magic rules? Can the runelord cast the runes several times each, as other casters with the lores of magic?
Of course he would not be a loremaster in his circumstance even though he already knows all the "spells of his lore". I reckon overall the anvil has gotten a major boost if the runelord can cast several times. But still, the ruletext says he can only cast each rune once.