It depends on what you are playing, if you are playing EDH voltron and your commander has hexproof like in this awesome deck http://tappedout.net/mtg-decks/03-07-15-uril-the-miststalker-lord-of-budget-voltron-26/
they are both good in their own distinctive ways Greater Auramancy is a terrible card in voltron commander because it gives your commander shroud so you cannot target it with your spells, auramancy is good if it is the only enchantment you are planning to attach to the creature, if not then it sucks, Hyena Umbra is good all around commander or nought I vote for Hyena Umbra.
July 4, 2015 8:04 a.m.
PepsiAddicted says... #4
Totem armor in modern. And since it came up already..in edh because it helps against Damnation etc
July 4, 2015 10:01 a.m. Edited.
astroknotts says... #5
Ah Damn it. I forgot shroud prevents even yourself from targeting the shrouded creature..
astroknotts says... #2
pure aura
July 4, 2015 1:45 a.m.