Regarding Chronos: Indestructible because it's a god. Needs devotion because it's a god. Colorless because it predates almost everything in Greek Mythology, thus it's older than the colors. Protection from enchantments because he was more powerful than any of his children and could only be defeated under very specific conditions (also, this could be changed from "permanents" to "creatures", "colorless creatures" or "colorless permanents" for balance reasons). Gives extra turns because his portfolio is time. Exiles himself until the end of the extra turn to avoid endless turns sheenanigans.
Created a new Chronos with a new CMC. Also, it's "Protection from Enchantments" ability now only works on Untapped permanents, so there's more space for counterplay. It's begging to have a "Giant" type there somewhere, but the only appropriate way was to remove "Enchantment", which goes against the premise that Theros' gods are Legendary Creature Enchantment.
Also, it just happens to close the 6/6 Titans cycle from Wizards.
@Grimshac, I only posted to fix a broken link... I couldn't edit my comment, so I had to make a new comment. It's not a new entry to the contest, I know the contest has closed.
@RaistlinMajere, the contest is closed. Sorry, your entry is probably not eligible.
Comments
I hope you like it!
Also, it just happens to close the 6/6 Titans cycle from Wizards.
http://mtgcardsmith.com/view/chronos-titan-of-time-1
http://mtgcardsmith.com/view/theracles-paragon-of-akros?list=user
http://mtgcardsmith.com/view/beckoning-the-return?list=user
http://mtgcardsmith.com/view/ashiok-dreams-incarnate?list=user
http://mtgcardsmith.com/view/patron-of-phenax?list=user
http://mtgcardsmith.com/view/nyleas-guardian?list=user
Agent of Phenax - http://mtgcardsmith.com/view/agent-of-phenax-4?list=set&set=1430
MasterRunslam plx, dis context was clouthed long ago, plz no necro, early rite?
On a more serious note, @datmtgplayer - results plox.
http://mtgcardsmith.com/view/path-guardian
@RaistlinMajere, the contest is closed. Sorry, your entry is probably not eligible.
... you do realize I was joking, right :x?
SECOND PLACE - @mtgisfun
FIRST PLACE - @Boomfat
Congrats to ALL the winners!