Hypersmurf
Moderatarrrrh...
Nail said:Being helpless doesn't make you automatically fail Ref saves?
Helpless - treated as having a Dex of 0.
Dexterity - "Any creature that can move has at least 1 point of Dexterity."
Therefore, a creature with a Dex of 0 is not a creature with at least 1 point of Dexterity; therefore, a creature with a Dex of 0 is not a member of the set of "any creature that can move"; therefore, a creature with a Dex of 0 is a member of the set of "any creature that can not move"; therefore, a helpless creature cannot move.
Evasion: "As with a Reflex Save for any creature, a character must have room to move in order to use Evasion."
How much room is "room to move" for a creature with a Dex of 1? The DMG example states that a 2.5 foot wide tunnel is "not enough". We know that a 5' wide square is enough, since you can Evade without leaving your own 5x5 square. So, for a Medium creature with at least one point of Dexterity, 5'x5' is certainly "room to move".
How much room is "room to move" for a creature with a Dex of 0?
In a 2.5 foot wide tunnel - he can't move.
In a 5' square - he can't move.
In a 1000 foot wide open plain - he can't move.
Therefore, with a Dex of 0, it doesn't matter how much space there is around the character, he does not have room to move, and therefore cannot use Evasion.
... as with a Reflex Save for any creature.
-Hyp.