Gonna give this one a decent analysis.
1. Kudos to being one of the first decklist posters around here that has too many lands, rather than too few.
With your mana curve, you probably want to cut down to 25, as well as cutting 2-3 nonland cards to bring the deck down to 60-61 cards with a nice land:nonland ratio.
2.
Call to Serve 
isn't very good as far as enchantments go - a pretty minor boost, and no protection against the weakness of auras, 2-for-1s (they kill the creature, they get 2 cards for their 1). These could just be the three you cut, you could replace them with decent equipment (ie.
Kitesail 
), or you could go for an aura with a little more protection, like
Flickering Ward 
or
Spirit Loop 
.
3. As much as I can see that you want lifegain in your deck, I'd strongly suggest replacing
Recumbent Bliss 
with
Oblivion Ring 
. Right now you have nothing that can deal with noncreatures, so having at least one option means that something like
Ensnaring Bridge 
won't completely ruin your day.
4. Not a huge fan of
Cresendo of War 
- sure it can provide a big boost, but if it's giving you more benefit than your opponent you're probably already winning anyway. You could instead go for something like
Mikaeus, the Lunarch 
, which will keep making your creatures bigger, but won't affect your opponent's creatures in the slightest.
5. I actually don't like
Noble Purpose 
, simply because for 1 extra mana you can get
True Conviction 
- unless you stack lifelink-esque triggers lifelink itself is usually superior (as it can allow you to survive what might otherwise be lethal damage), and double strike is very, very relevant.
6. I don't really like
Defy Death 
here... you don't have too many targets which seem worthy of a 5 mana recursion spell. Seeing as your good recursion targets are all expensive already, you may as well just swap out 4 plains for
Emeria, the Sky Ruin 
and get them for free.
7.
Purity 
won't really be anything more than a 6/6 flier in most games. Red's usually going to be the color that wants to deal damage to your face, and if they're running such a deck they'll want to be winning before you get to 6 mana anyway.
8.
Archangel of Strife 
isn't bad, but if you can get your hands on it
Elesh Norn, Grand Cenobite 
is
much better. ^^ Though not quite as angelic...
Further considerations:
*Mana curve isn't actually too bad, besides a somewhat fat 5 slot.
*Not a lot of removal - 2
Day of Judgment 
, 3
Recumbent Bliss . Basically leaves you at the mercy of what your opponent plays. Of course, this means that instead of getting cards that answer their threats, you get cards that ask them to answer you - but sometimes they'll play something that you just need to stop. There's a fine line when it comes down to how much removal to include in a deck. :-)
*Further to the removal topic, as I mentioned in point 3 above, you have absolutely no way to deal with noncreature permanents. Against some decks it won't matter; against others they'll just play something like a
Sphere of Safety 
w/ a
Luminarch Ascension 
out, sit back, and start shenanigans. Often players will include cards that can hit multiple types of permanents (ie.
Oblivion Ring ), or creatures with an ETB that will get rid of a permanent in order to have removal, and reduce the risk of it being a dead card (due to your opponent not playing anything worth removing).
Leonin Relic-Warder 
could be quite good here - at worst its an on-curve creature; at best it gives you a 2-for-1.
Overall though, besides cutting out the ~5 lands and the 2-3~ nonlands to get your deck down to 60-61 cards, it's actually a workable list as is. Good job!
