Attuned Varmint

Menace (This creature can't be blocked except by two or more creatures.)
At the beginning of each combat, if it's a mana surge, Attuned Varmint gets +2/+0 until end of turn.
"Lock yer' doors and bolt yer' winders' tonight my love, for dose' damned critters are sure to be around again"
- Yvin, to the butcher's daughter