This question asks about the maiming weapon enchantment, which was updated in Magic Item Compendium:
Miniatures Handbook:
If the weapon normally has a ×2 critical multiplier, roll 1d4 each time you successfully score a critical hit to determine your multiplier. For weapons with a ×3 multipli...
As noted in David Coffron’s answer to another question, the moonblade (Dungeon Master’s Guide, pg. 217) has no fixed limit on how much damage it can do: there is no stated limit to the number of runes on the blade. It states:
A moonblade has one rune on its blade for each master it has served...
As noted in David Coffron’s answer to another question, the moonblade (Dungeon Master’s Guide, pg. 217) has no fixed limit on how much damage it can do: there is no stated limit to the number of runes on the blade. It states:
A moonblade has one rune on its blade for each master it has served...