Tiny Ratfolk + Tail Blade

[Coinshot]

Say a ratfolk got reduced in size and became Tiny from Small. If he was using a tail blade weapon, the dmg would effectively go from 1d2 to, I believe, 0. If he was sneak attacking, would the sneak attack damage apply, or would it be nullified since the weapon did 0 damage?

[Fuzzy-Wuzzy]

1d2 drops to 1, not 0, as per the damage dice FAQ.

Dunno what happens to your sneak attack damage if you somehow went to Diminutive (mythic reduce person, I suppose) and fell off the chart.