Duration: 24 Cumulative: No Affects all members of the group with armor spell. Nothing more but nothing less. Please note that this is NOT a group enchant, it just casts armor on all members of group via one spell instead of casting it one by one. So it has in fact the same effect as using groupcast/groupenchant command with normal armor spell, only it is available a lot sooner than any such skill.

See also: armor, in-mud help for group command