Alter Aeon Online Help

Keywords are:  'spell brewonly clear thinking'

Clear thinking is a spell that can only be brewed.  It helps provide
resistance to the 'feeble mind' spell and can even counter 'feeble mind'
after it has been cast.  This spell also temporarily increases the
intelligence and wisdom of the drinker. Clear thinking also helps
when resisting dazing and stunning effects.

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'clear thinking' attempts to cancel any feeblemind spell on the target.
Should there be no feeblemind spell, or if the cancel fails, int and wis are
temporarily raised instead.