702.29 Schwund
702.29a Schwund ist ein Schlüsselwort, das zwei Fähigkeiten repräsentiert. „Schwund N“ bedeutet „Diese bleibende Karte kommt mit N Schwundmarken ins Spiel.“ und „Entferne zu Beginn deines Versorgungssegments eine Schwundmarke von dieser bleibenden Karte. Falls du dies nicht kannst, opfere sie.“
702.29. Fading
702.29a. Fading is a keyword that represents two abilities. „Fading N“ means „This permanent enters the battlefield with N fade counters on it“ and „At the beginning of your upkeep, remove a fade counter from this permanent. If you can't, sacrifice the permanent.“
Q: How exactly does this ability work?
A: Fading is an ability that causes permanents to stay in play for a limited time. Cards with fading come into play with a specified number of fade counters on them. They also have a triggered ability that forces you to remove one of these counters at the beginning of each of your upkeeps. When you try to remove a fade counter and there are none left to remove, you must sacrifice the permanent.
Q: Do I have to sacrifice the permanent with fading as soon as I remove the last fade counter from it?
A: No. The permanent sticks around until you try to remove a fade counter when there aren't any left to remove. Fading works similarly to being „decked“–you don't lose when you draw your last card, you lose when you have to draw a card and can't.
Q: What if I forget to remove a fade counter?
A: The triggered ability that makes you remove fade counters is mandatory, not optional, so you must back up and remove a counter. (If there are none left to remove, you must back up and sacrifice the permanent.)