Kalvalax

Kalvalax is a Legendary Spirit Attack champion from the Knight Revenant faction, designed by the winning entrant of the 2021 Community Champion Concept Contest. His thesis is a self-sustaining Poison engine: he generates his own Poison stacks from turn one and then converts them directly into extra hits and scaling damage, making him a strong all-rounder rather than a niche specialist.

Core Strengths & Abilities: Self-Generating Poison Passive: Pestilence places four 5% Poisons on all enemies at the start of each round, plus a 50% chance of an additional 5% Poison each turn, and converts any Poison placed on Kalvalax himself into a 15% Continuous Heal instead. Poison-Scaling Damage: Corruption Locus (A2, 3-turn cooldown) gains up to 3 extra hits based on the target's Poison count, while Storm of Vitriol (A3, AoE, 4-turn cooldown) scales its damage by the number of Poisons on each target — echoing kits like Dracomorph or Lord Shazar. Duration Extension & Healing: His A1 has a 40% (50% booked) chance to extend all Poisons on the target by 1 turn, while healing Kalvalax for 2.5% of his MAX HP per active Poison.

Key Weaknesses: His damage output depends heavily on stacking Poisons over multiple turns, so burst-focused or short single-target fights blunt his scaling advantage, and he brings no direct crowd control to protect his own setup turns.

With elite ratings across Clan Boss, Dragon, and Ice Golem, Kalvalax excels as a poison-stacking nuker across nearly every PvE mode in the game.