… is C Melendor!
Counter to the following scary heroes:
Finley: Stacks against him, heals all damage done, reverses defense down with +44%
Frigg: Heals all damage done, reverses defense down with +44%
Odin: Heals all damage done, kills the mana boost
Garnet: Kills the ailment blocker
Vanda: Kills the ailment blocker
Black Knight: Kills the taunt, not sure about the attack up
C Kadilen: Heals all damage done, has a chance of dispelling the dodge on each enemy hero. Used before an AOE hitter you give the AOE hitter something like an 80% chance of hitting
Krampus: Stacks against him, kills the taunt (not sure of the attack up)
Sif: Kills the counter and the half damage
Basically the guy is a counter to almost most of the scary heroes in the current meta. Use him in combo with Skadi, Frigg, Lady Loki/Myztero… basically anyone with a match-winning special and he will clear the way for it to happen. And quite readily available in the costume portal! (Serously regretting feeding my duplicates of him, I would love to have 3 for my war teams).
Defensive emblem paths gets him to 713 attack (decent for stack), 764 defense and 1331 heath (decent survivability).
I can’t think of any other widely accessible hero that is as useful… and that includes his cleansing counterpart C Rigard. Who is definitely useful and a jack-of-all trades, but his cleanse helps you to survive and is not mandatory, whilst C Melendor remove the blockers which stop you from winning raids