Durkwood Tracker — ruling 1

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 doesn’t resolve.

Durkwood Tracker : règles, fonctionnement et interactions (MTG)

Durkwood Tracker is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

, : If this creature is on the battlefield, it deals damage equal to its power to target attacking creature. That creature deals damage equal to its power to this creature.

How it works : Durkwood Tracker

Original English text — Wizards of the Coast / Scryfall

#1September 25, 2006· Wizards of the Coast
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 doesn’t resolve.
No other card is named in this ruling.