Some troops in arena are very straight forward. Atlanta deals damage to all enemies. Yawn. What’s your favorite troop to use that makes you feel like you’ve done something splashy, exciting, or difficult to pull off?
Mad Prophet is a favorite, because he gives everyone 5 Magic (huge in Arena) and costs a whopping 18 Purple.
I like Lucifria because she’s the only troop that can burn all enemies guaranteed. Dimetraxia can, but only 75% chance to do so, and he does scatter damage, whereas Lucifria is single target (you can usually pick off the lowest enemy then with the burn damage).
Ice Witch is a fun one because she gives 3 Magic to allies if she can manage to kill an enemy (I believe she does 10 damage). If you set her up right to get that killing blow, you can cascade lots of damage out of her.
Mist Stalker is a better version of her, because although he only gives himself 3 magic if the enemy dies, he deals true damage, so it’s easier to get the bonus. You can’t target his ability though, it hits the weakest enemy.
I can’t recall any of their names, I like using the troops who explode a gem and do damage based on how many of x color gems being destroyed in the process. Some are similar to that with the column/row.
There are a couple of troops who do this but provide atk, arm, or hp. They are useful as well.
I should go look for their names, it may help newer players.
Destroy a row and column. Knock one of the first 2 Enemies to the back. Then deal [Magic + 4] damage to the first 2 Enemies, boosted by Green Gems destroyed. [4x]
Life steal troops get interesting. Also any of the faction troops with 1:1 boost ratios that include two colors of gems on the board are quite strong (indrajit warrior and hunter, frostfire witch, not sure if others)
Edit: also any troop that can target a doomskull via explode or destroy somehow, even peasant can become quite mighty
Rock Worm, in first place; with good luck on the initial board and skyfalls, it can loop through the entire opposing team without them ever getting a turn.