Killer Frost/Regime

Strategy
Killer Frost Regime is a great character with an extremely beneficial passive to one's team. She can reduce healing to a tenth to enemies, and her specials slow down and weaken her opponents. With Killer Frost, you're all about power so you can spam her specials and slow your opponents down. The only way to escape is to tag out. A good perk is also her high amount of health, a feat tied with Solomon Grundy/Boss and Superman/Godfall and surpassed by Shazam.

Her extreme healing reduction for the entire opposing team (regardless of whether she is tagged in or knocked out) forces them to walk on thin ice as any mistake would be almost impossible to recover from, while her very high health means she can easily recover large amounts of health.

Good with:

 * Wonder Woman/600: Her passive gives Regime Killer Frost 30% more damage and power generation.
 * Batgirl/Cassandra Cain: Cassandra can easily inflict heavy damage on targets with high health, and Regime Killer Frost severely punishes characters at lower health as it is almost impossible to heal back, making them a very unforgiving combination.
 * Killer Frost/Prime: The pair of suffocating team-wide debuffs are simply an immense pain to fight against. Prime Killer Frost's s2 in particular is a large amount of unblockable damage that is just not recoverable against Regime Killer Frost. Indeed, Regime Killer Frost, 600 Wonder Woman and either one of Prime Killer Frost or Cassandra Cain Batgirl are common teams on multiplayer defence and are quite possibly the most frustrating opponents there could be.

Good against:

 * Harley Quinn, Doomsday/Prime, etc.: Regime Killer Frost severely hinders any card that heals for a significant amount.

Countered by:

 * Raven/Prime, Doomsday/Containment, Cyborg/Teen Titans: Their passives are unaffected by Regime Killer Frost's passive.

Abilities
Here are Killer Frost's abilities.

Support Cards and Gear
Here are Killer Frost's support cards and gear.

Stats
These stats are the final damage and health levels at LEVEL 50, per Elite Level.

Trivia

 * Regime Killer Frost suffered from multiple bugs. At release, game crashes occurred while attempting to load her card. She can be used in silver and bronze only challenge battles despite being gold. Her specials completely stopped power generation instead of slowing by 50%. All of them have since been fixed.