Magic The Gathering - Lorwyn Eclipsed - Firdoch Core - 0255

Changeling (This card is every creature type.) {T}: Add one mana of any color. {4}: This artifact becomes a 4/4 artifact creature until end of turn.

Firdoch Core is a Common, Kindred Artifact - Shapeshifter card from the Magic The Gathering set Lorwyn Eclipsed (MTGSC-ECL-0255)