Dust Stalker

Dust Stalker’s last ability checks to see if you control another colorless creature as the end step begins. If you do, the ability won’t trigger. If you don’t, the ability will check again as it tries to resolve. If you somehow control another colorless creature at that time, the ability won’t do anything. You won’t return Dust Stalker to its owner’s hand.

Wotc — August 25, 2015

Dust Stalker’s last ability doesn’t depend on Dust Stalker being colorless. If it gains one or more colors, the ability will still look for another creature you control that’s colorless.

Wotc — August 25, 2015

Like most abilities, Dust Stalker’s last ability functions only while Dust Stalker is on the battlefield.

Wotc — August 25, 2015

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.

Wotc — August 25, 2015

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

Wotc — August 25, 2015

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.

Wotc — August 25, 2015

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

Wotc — August 25, 2015

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.

Wotc — August 25, 2015