Proud Pack-Rhino (MH3) from Modern Horizons 3, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Ron Spears
• Card Text:
  When Proud Pack-Rhino enters the battlefield, choose one —
  • Put a shield counter on target permanent. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)
  • Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)