The Spineback Turtle of the Water Element with its 4 Mana cost is a great tank having 3 armor and 7 HP and is often my go-to tank.
While the Diemonshark and the Serpent of Eld are better tanks but they cost almost double the mana cost.
Magic Attacks are what I normally use for both the Water and Earth Element as their summoners synergize well in boosting that.
I was a bit worried about the enemy's lineup as it was front heavy with sacrificial units and its back end with some pretty heavy hitters with snipe, opportunity and sneak skills.
Good thing I usually have a Hardy Rockfish to protect my backline.
Both summoners gave +1 to Magic and Melee attackers but the fire element had an added bonus of +1 to health.
With most magic attackers dishing out 2 damage the frontline quickly fell even though both pixies fell quickly.
The tank was able to do its work and absorb most of the damage at front to give enough time for the back row to kill off everything.