Mice and Mystics: Off Toppers (2014)

This promo card is included when buying Downwood Tales from the Plaid Hat Games site.

From the card:

Title: Off Toppers
Type: Weapon, sharp, melee
Requires: Warrior or Tinkerer
Bonus: +1 to battle value

"The bonus is +2 if this mouse is sharing a space with another mouse. When attacking, choose 2 minions on the same or adjacent space as the attacking mouse. All melee hits are applied against one minion, all ranged hits are applied against the other. Each minion defends separately."