Pilfer is a keyword that is activated when a creature with Pilfer deals damage to the enemy player.
The effects vary and are described on the card itself, example:
- Pilfer: +1/+1 - The creature gains +1 Power and +1 Health upon damaging the enemy player.
- Pilfer: Draw a card - The player gets to draw a card upon damaging the enemy player.
The most common Pilfer effect is creature Power and Health gain.