Sengir ability

The Sengir ability is a slang term used by Magic R&D to describe the following effect: "When a creature damaged by this creature dies, put a +1/+1 counter on this creature." This effect is named after the card Sengir Vampire from Alpha. An alternate nickname, as proposed by Mark Rosewater, could be hunger.

The effect is primary used in black. The ability has proven hard to use as players either avoid blocking it or make sure to block it with enough creatures to kill it, meaning that it doesn't often result in the creature getting +1/+1 counters. Because of this, R&D now often do variations of it (e.g. Zurgo Helmsmasher having indestructible during his attack phase).