Nothing. Digging stinks for non-dwarf with a STR as low as 13. Definitely try to carry either ring of digging or wand of stone to mud. If you aren't playing no-recall, check the town shops often; you may be able to buy one of these at the black market or even the magic shop. I wouldn't bother with a pick; the only time you will really NEED to be able to dig into granite is to crack a vault, and you don't want to be overburdened on the turn when you do that.
I'd also try to get STR up as quickly as possible if I were in your position, even at the risk of losing other key stats to potions of brawn.
I'd also try to get STR up as quickly as possible if I were in your position, even at the risk of losing other key stats to potions of brawn.
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