Spiders of Mirkwood
The Dark of Mirkwood #8 (x2/x0)
Gegner
(18) 3 2 2 4
Spider.  

While it is engaged with you, Spiders of Mirkwood gets +1 Attack for each exhausted character you control.

Shadow: Choose and exhaust 1 character you control. If this attack was undefended, also deal that character 2 damage.