Fenbeasts can tap into the energy of Albion through marshes and fens, rebuilding themselves from its substance. They have the Regeneration special rule when in marshes, fens, morasses, and similar swampy terrain features. Note that this does not include lakes, rivers or other types of pure' water feature. They are vulnerable to magical attack, however, and so in addition to fire attacks they may not regenerate magically inflicted wounds (from spells, magic items, etc).