Corrupted magic logs can be fletched at level 80 Fletching for 96 experience (between that of a magic shieldbow (u) and magic stock). The fletching skill cannot be boosted to fletch corrupted magic logs. When fletched, the logs do not yield any product, similar to protean logs. They cannot be fletched on a portable fletcher conventionally. They instead have to be used on the fletcher.
They can be burned at level 75 Firemaking for 319 experience (compared with 303.8 XP from burning normal magic logs).
When used on a bonfire they give a boost for half the time granted by regular magic logs, equal to 30 minutes. When used on a portable brazier, any log will receive 66 minutes health boost.
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