Doom of Stone
I'd rather use a rocket launcher

Arcane: Deep
Base Rarity: Common
Troop Type: Doom
Troop Role: Warlock
Troop Id: K35_09 / 6666
Max skills: 17    16    35    11
Kingdom: Dhrak-Zum
Kingdom Id: 3035
Trait #1: Inscribed
Gain 1 Armor when an enemy casts a spell.
Trait #2: Invulnerable
Immune to all Status Effects, Devour, Mana Drain, Transform, and Lethal Damage.
Trait #3: Destiny of Stone
2% chance to Deathmark an enemy when matching Brown Gems, boosted by my ascensions.
Spell: Glyph of Stone
Description: Deal [Magic + 4] damage to an enemy, boosted by Death Marked enemies. Death Mark all enemies. Create 8 Brown Gems. [6x]
Mana Color: Brown
Mana Cost: 25
Spell Id: 8003
Switch Release: Tuesday, Jan 1, 2030