Absorb

Absorb is a damage prevention keyword ability, written as Absorb N, where N is a number. It prevents N damage from each single source that deals damage to the creature. Absorb was introduced in Future Sight. By its nature as a damage prevention ability, this is a white ability. It has only been printed on one card so far, the timeshifted Lymph Sliver.

Reminder Text

The reminder text for Absorb on Lymph Sliver reads "If a source would deal damage to a Sliver, prevent 1 of that damage." Presumably, on a card that just had Absorb, "Sliver" would be replaced by "this creature" or something like that.