New-this-season skill allowing one to eat magical items, destroying them to permanently raise intelligence.
Iron Stomach is a skill Mordecai had never heard of before this season, granted at level 10 by Katia's Enchanted Spiked Knee Pads of the Munificent Goddess Kina. It lets the user consume magical items: the item is destroyed, and eating enough permanently raises intelligence by a point — at level 10 the ratio is one-to-one. It also allows cursed items to be eaten with no ill effects, which is a significant advantage.
The practical limit is that the system makes no distinction between a magical ring and a magical jacket, so eating most magical items is out of the question for a normal-sized crawler. Katia, who can make herself large enough to swallow anything whole, exploited this to gain twenty levels of intelligence from random throwaway items before it became too much. Prepotente already has the skill as well.
A consumption skill converting sacrificed magical loot into permanent intelligence.