Coldheart is a Rare from the Dark Elves faction. She is the best Rare champion bar none for end game dungeon content! Coldheart has an exceptional ability on her A3 called Heartseeker that decreases the enemies turn meter by 100% and hits REALLY HARD! This ability is fantastic for Spider stages 16-20 and Fire Knights stages 13-20. She also has a 4 hit A1 skill which places 100% Heal Reduction when she is ascended.
When building your Coldheart, ensure she has enough Accuracy to land her turn meter reduction ability (multiply the level of Dungeon you are facing x10). You only need 70% crit rate in her build so try to maximise crit damage. Also ensure she is wearing an HP% chest and has more HP than your tank so that she isn’t immediately targeted!
Overall an exceptional Rare champion and a gamechanger! Everyone who owns Coldheart will build her and enjoy the big numbers!