[modify_unit] [filter] ability=blood_heal_ability_inactive x=$x1 y=$y1 [/filter] [effect] apply_to=new_ability [abilities] {ABILITY_LESSER_BLOOD_HEAL} [/abilities] [/effect] [effect] apply_to=remove_ability [abilities] {ABILITY_LESSER_BLOOD_HEAL_INACTIVE} [/abilities] [/effect] [/modify_unit]