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Keywords are:  'cleric spell haven'

Spell: haven                    Mana: 120  Wis: 33  Chr: 29  Lvl 29 Cler  (28%)
                                (helpful)   Requires: peace
                                Group: Cleric tranquility spellgroup
                                (Requires Favor)
                                (Can Be Groupcast)

Usage:
cast haven

The 'haven' spell is used by high level clerics to entreat their
gods to infuse large regions with potent healing energy. Those
within an area where haven is active will experience an increase
in hitpoint and movement regeneration.