Durkwood Tracker

Creature - Giant 4/3, 4G (5)
{1}{G}, {T}: If Durkwood Tracker is on the battlefield, it deals damage equal to its power to target attacking creature. That creature deals damage equal to its power to Durkwood Tracker.¹
These days, trackers must follow their quarry over years as well as miles.
Illus. Michael Phillippi

Gatherer Card Rulings [Nov 2009]

• 9/25/2006: If Durkwood Tracker has left the battlefield before the ability resolves, the ability doesn't do anything. If the targeted creature has left the battlefield before the ability resolves, the ability is countered.

Format Legality	Legal in Vintage, Legacy, Extended, MTGO Classic Banned in Standard
Printings (1/9)	Time Spiral (Uncommon)