Platform, device version and operating system:
Steam, Windows 7 x64
What you were expecting to happen, and what actually happened:
I think the Boost Ratio on Soldier of Wrath’s spell may be the incorrect. Abyss Strike does [Magic+1] true damage boosted by Red Gems. The current Boost Ratio is 3:1, which means 1 damage per 3 Red Gems. So with an average number of red gems (12), I’m doing 19+1+4=24 damage.
Compare this to Tigraki Warrior, another Bounty troop, its Break Morale spell, which does [Magic+1] true damage boosted by the target’s Armour, at the same 3:1 Boost Ratio. At the level 8 Bounty, Dragon Turtle starts with 37 Armour and 32 Health. So my Tigraki Warrior would do 19+1+37/3=20+12=32 true damage, just killing the Dragon Turtle. At higher levels, it would likely also kill, doing even more damage.
Given that the number of Red Gems on the board is usually between 6 and 12 (with 2 and 17 at the realistic extremes), Soldier of Wrath seems remarkable underpowered. I think its Boost Ratio should be 1:1, making it strong at low levels, usable at mid levels, and underpowered at high levels of Bounty Battle.
It just feels wrong.