Crumble to Dust — ruling 1

You may leave any cards with that name in the player’s graveyard, hand, or library. You don’t have to exile them.

Crumble to Dust — ruling 2

Cards with devoid use frames that are variations of the transparent frame traditionally used for Eldrazi. The top part of the card features some color over a background based on the texture of the hedrons that once imprisoned the Eldrazi. This coloration is intended to aid deckbuilding and game play.

Crumble to Dust — ruling 3

A card with devoid is just colorless. It’s not colorless and the colors of mana in its mana cost.

Crumble to Dust — ruling 4

Other cards and abilities can give a card with devoid color. If that happens, it’s just the new color, not that color and colorless.

Crumble to Dust — ruling 5

Devoid works in all zones, not just on the battlefield.

Crumble to Dust — ruling 6

If a card loses devoid, it will still be colorless. This is because effects that change an object’s color (like the one created by devoid) are considered before the object loses devoid.

Crumble to Dust : règles, fonctionnement et interactions (MTG)

Crumble to Dust 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

Devoid (This card has no color.) Exile target nonbasic land. Search its controller's graveyard, hand, and library for any number of cards with the same name as that land and exile them. Then that player shuffles.

How it works : Crumble to Dust

Original English text — Wizards of the Coast / Scryfall

#1August 25, 2015· Wizards of the Coast
You may leave any cards with that name in the player’s graveyard, hand, or library. You don’t have to exile them.
No other card is named in this ruling.
#2August 25, 2015· Wizards of the Coast
Cards with devoid use frames that are variations of the transparent frame traditionally used for Eldrazi. The top part of the card features some color over a background based on the texture of the hedrons that once imprisoned the Eldrazi. This coloration is intended to aid deckbuilding and game play.
No other card is named in this ruling.
#3August 25, 2015· Wizards of the Coast
A card with devoid is just colorless. It’s not colorless and the colors of mana in its mana cost.
No other card is named in this ruling.
#4August 25, 2015· Wizards of the Coast
Other cards and abilities can give a card with devoid color. If that happens, it’s just the new color, not that color and colorless.
No other card is named in this ruling.
#5August 25, 2015· Wizards of the Coast
Devoid works in all zones, not just on the battlefield.
No other card is named in this ruling.
#6August 25, 2015· Wizards of the Coast
If a card loses devoid, it will still be colorless. This is because effects that change an object’s color (like the one created by devoid) are considered before the object loses devoid.
No other card is named in this ruling.