I know very well how you feel when you have to complete the daily mission with the life class (crying), really in low elo it is difficult to win many games. This comp is very good to try not to lose so much with this element, without spending too many Decs.
A great combination against physical classes like: Life, Death, Fire and Earth, especially when the game is with high mana (19+), the sumumer “Mother Khala”, is the best option most of the time.
"Venari Crystalsmith" + "Divine Heal" + "Silvershield Bard" give "Shieldbearer" excellent survival and almost immortal.
“Silvershield Knight”, “Feral Spirit” and “Peacebringer” are good options for when you want to be a little more offensive.
“Armorsmith” is an option if you want to make sure you don't lose to virtually any physical deck.
You won't win if the enemy deck is Water/Magic Damage.