Xs and Os: Mole vs. Farmer (Business Card Size)

A quick whack-a-mole/tic-tac-toe mashup for two players that fits on a business card (if printed at a smaller scale). All you need is a pencil,  paper and 4d6 (four six-sided dice). 

One player acts as the mole trying to dig a trench by connecting 3 Os, the other acts as the farmer trying to whack it by rolling dice! Both have special abilities to better thwart the opponent's efforts.