OK, updated fail list, assuming you are using Mythic x Diamond.
Fire - 30 secs
Air - 2 hrs
Mythic - 12 hrs
Firestorm - 12 hrs
Easter - 12 hrs
Scorpion - 13 hrs
Eagle - 14 hrs
Crusader - 44 hrs
Gold - 44 hrs
and finally
Helios - ??? hrs
If Helios is 12 hrs, I swear TL will never hear the end of players ranting :3