Void Grafter (OGW) from Oath of the Gatewatch, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Alejandro Mirabal
• Card Text:
  Devoid (This card has no color.)
  Flash (You may cast this spell any time you could cast an instant.)
  When Void Grafter enters the battlefield, another target creature you control gains hexproof until end of turn.