Rabenrevier

Alle Kreaturen haben Verdorren. (Sie fügen Kreaturen Schaden in Form von -1/-1-Marken zu.)
Immer wenn du chaos würfelst, lege eine -1/-1-Marke auf eine Kreatur deiner Wahl, zwei -1/-1-Marken auf eine andere Kreatur deiner Wahl und drei -1/-1-Marken auf eine dritte Kreatur deiner Wahl.

Coto de Cuervos

Todas las criaturas tienen la habilidad de debilitar. (Hacen daño a las criaturas en forma de contadores -1/-1.)
Siempre que lances caos, pon un contador -1/-1 sobre la criatura objetivo, dos contadores -1/-1 sobre otra criatura objetivo y tres contadores -1/-1 sobre una tercera criatura objetivo.

Garenne du Corbeau

Toutes les créatures ont la flétrissure. (Elles infligent des blessures aux créatures sous la forme de marqueurs -1/-1.)
À chaque fois que vous obtenez chaos, mettez un marqueur -1/-1 sur une créature ciblée, deux marqueurs -1/-1 sur une autre créature ciblée, et trois marqueurs -1/-1 sur une troisième créature ciblée.

Volo del Corvo

Tutte le creature hanno avvizzire. (Una fonte con avvizzire infligge danno alle creature sotto forma di segnalini -1/-1.)
Ogniqualvolta tiri caos, metti un segnalino -1/-1 su una creatura bersaglio, due segnalini -1/-1 su un'altra creatura bersaglio e tre segnalini -1/-1 su una terza creatura bersaglio.

レイヴンの地

すべてのクリーチャーは萎縮を持つ。 （それらはクリーチャーに－１/－１カウンターの形でダメージを与える。）
あなたがchaosを出すたび、クリーチャー１体と、他のクリーチャー１体と、他のクリーチャー１体を対象とする。その１体目の上に－１/－１カウンターを１個置き、その２体目の上に－１/－１カウンターを２個置き、その３体目の上に－１/－１カウンターを３個置く。

Raven's Run

All creatures have wither. (They deal damage to creatures in the form of -1/-1 counters.)
Whenever chaos ensues, put a -1/-1 counter on target creature, two -1/-1 counters on another target creature, and three -1/-1 counters on a third target creature.

Planechase Anthology Planes

All creatures have wither. (They deal damage to creatures in the form of -1/-1 counters.)
Whenever you roll {Chaos}, put a -1/-1 counter on target creature, two -1/-1 counters on another target creature, and three -1/-1 counters on a third target creature.

Planechase Planes

All creatures have wither. (They deal damage to creatures in the form of -1/-1 counters.)
Whenever you roll chaos, put a -1/-1 counter on target creature, two -1/-1 counters on another target creature, and three -1/-1 counters on a third target creature.

A face-up plane card that's turned face down becomes a new object with no relation to its previous existence. In particular, it loses all counters it may have had.

A plane card is treated as if its text box included "When you roll {PW}, put this card on the bottom of its owner's planar deck face down, then move the top card of your planar deck off that planar deck and turn it face up." This is called the "planeswalking ability."

Damage from creatures with wither affects players and planeswalkers normally.

If an ability of a plane refers to "you," it's referring to whoever the plane's controller is at the time, not to the player that started the game with that plane card in their deck. Many abilities of plane cards affect all players, while many others affect only the planar controller, so read each ability carefully.

If the source of the damage is still on the battlefield at the time that damage is dealt, its characteristics are checked to see if it has wither. If the source has left the battlefield by then, its last existence on the battlefield is checked to see if it had wither.

Multiple instances of wither are redundant.

Since damage from a creature with wither is real damage, it follows all the other rules for damage. It can be prevented or redirected. When it's dealt, it will cause "Whenever [this creature] deals damage" and "Whenever [this creature] is dealt damage" abilities to trigger.

The -1/-1 counters that result from wither remain on the damaged creature indefinitely. They won't be removed if the creature regenerates or the turn ends.

The controller of a face-up plane card is the player designated as the "planar controller." Normally, the planar controller is whoever the active player is. However, if the current planar controller would leave the game, instead the next player in turn order that wouldn't leave the game becomes the planar controller, then the old planar controller leaves the game. The new planar controller retains that designation until they leave the game or a different player becomes the active player, whichever comes first.

Wither applies to any damage, not just combat damage.

You must target three different creatures when the chaos ability triggers, even if that means you have to target creatures you control. If you can't target three creatures (because there are just two creatures on the battlefield, perhaps), the ability is removed from the stack and does nothing.