This legendary demon card is extremely useful against high armored targets.
He annihilates a foe with armor from one hit!
He is a "ghost" so has immunity to melee and ranged damage.
His weakness is low HPs so don't play him in the attack phase. An opponent will have a possibility to slay him with a magical attack.
Steel Lord can be upgraded from Stell Spawn. You have a chance to get him as a reward for Wednesday Challenge and as a reward for daily fight rank.