Hedron-Field Purists (ROE) from Rise of the Eldrazi, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Scott Chou
• Card Text:
  Level up 2W (2W: Put a level counter on this. Level up only as a sorcery.)
  [Level 1-4]: If a source would deal damage to you or a permanent you control, prevent 1 of that damage. [1/4]
  [Level 5+] : If a source would deal damage to you or a permanent you control, prevent 2 of that damage. [2/5]