The infernal axe will be able to burn 5,000 logs before degrading, requiring another smouldering stone or dragon axe to recharge it. When fully depleted, you can still use it as a regular dragon axe. The infernal axe possesses the same special attack as the dragon axe, in which it boosts a players Woodcutting level by 3 and requires 100% special to use. When fighting the Wintertodt, the infernal axe does not consume bruma roots, acting instead as a regular axe.