Thanks for your reply, simur. '
Armadillo Cloak or
Unflinching Courage' is a topic I've been wrapping my head around for quite a few weeks. It boils down to this:
With
Armadillo Cloak, I can add up to any
Lifelink or
Spirit Link /
Armadillo Cloak attached to enchanted creature, which is nice. With
Unflinching Courage, I can't.
But then again, here comes the twist: Since
Armadillo Cloak's pseudo-Lifelink is not a real ability in its own sense (such as
Lifelink), it goes on stack. Since I cannot properly explain it, I would just post the links and quote from where I saw what the actual difference is:
"
Armadillo Cloak also has a triggered ability, whereas
Unflinching Courage gives the creature a static ability. So if you were at 1 life and you had a 10/1 blocking a 4/4 trample, you would lose if your 10/1 was enchanted with the cloak, but you would survive if it was enchanted with
unflinching courage."
http://tappedout.net/mtg-questions/armadillo-cloak-and-unflinching-courage/