Or suppressing mass spells, meaning that both spells would be cast at most on the advanced level. It doesn't matter much for the Mage, as resurrect and dispel are powerful, but it's harder for the Warrior without mass spells.
For a long time, they've wanted an analogue of the blue cap for the Amulet of Renunciation, but for the 4th level. Of course, by moving it to relics.