Khârn the Betrayer

Mana cost: {3}{R}
Type: Legendary Creature — Astartes Berserker
Power / toughness: 5 / 1
Set: Warhammer 40,000 Commander #79 (rare)
Price: $5.60 USD

Berzerker — Khârn the Betrayer attacks or blocks each combat if able.
Sigil of Corruption — When you lose control of Khârn the Betrayer, draw two cards.
The Betrayer — If damage would be dealt to Khârn the Betrayer, prevent that damage and an opponent of your choice gains control of it.

Khârn the Betrayer has 2 printings, first in Warhammer 40,000 Commander (2022). EDHREC ranks it #4,671 among Commander cards. It appears most in Zedruu the Greathearted decks (4,743 on EDHREC). 1 public deck on TCG runs it. It has 4 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: not legal
pioneer: not legal
standard: not legal
brawl: not legal

Public decks that run Khârn the Betrayer

The Ruinous Powers - Warhammer 40,000 Commander, led by Abaddon the Despoiler

Commanders that run Khârn the Betrayer most

Deck counts from EDHREC.

Often played with Khârn the Betrayer

Cards that show up in the same decks on EDHREC.

Rulings

2022-10-07: An opponent gaining control of it is part of the replacement effect and happens immediately, even if you are in the middle of resolving the spell or ability and it has more instructions to perform after taking damage.
2022-10-07: In some cases, a single spell or ability will deal damage to this creature multiple times during its resolution. In that case, a new player gains control of it each time, its ability triggers once each time, and the appropriate players control those triggers. After that spell or ability is done resolving, all of those triggers are put onto the stack in turn order, starting with the active player (or the next player in turn order if the active player isn't involved). Usually, this means that the cards are drawn in a different order than the control-changing effects took place.
2022-10-07: In contrast, the Sigil of Corruption ability is a triggered ability, and it won't go onto the stack until after the spell or ability that tried to deal damage finishes resolving.
2022-10-07: You lose control of Khârn the Betrayer when it leaves the battlefield or another player gains control of it.