Cheapest priced copy (Battle for Zendikar): $0.35 at Card Kingdom, near mint, their price list as of .
Forerunner of Slaughter 
Creature — Eldrazi Drone · 3/2 · Uncommon · Battle for Zendikar · #204
Devoid (This card has no color.)
{1}: Target colorless creature gains haste until end of turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Battle for Zendikar | 204 | Uncommon | $0.35 | $0.79 |
| Duel Decks: Zendikar vs. Eldrazi | 64 | Uncommon | $0.35 | — |
5 rulings from Wizards of the Coast
- 25 August 2015Other cards and abilities can give a card with devoid color. If that happens, it’s just the new color, not that color and colorless.
- 25 August 2015If 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.
- 25 August 2015Devoid works in all zones, not just on the battlefield.
- 25 August 2015Cards 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.
- 25 August 2015A card with devoid is just colorless. It’s not colorless and the colors of mana in its mana cost.