UK Edition had a Potion of Speed but for reasons I never fully understood, it wasn’t included in the US Edition.
It will allow you to roll twice as many dice as usual the next time you move.
Incidentally, this is exactly the same effect as the UK & US Swift Wind spells.
However, in the US Edition Quest 9: The Last gate from ROTWL states that Kessandria possesses a Potion of Speed with the following effects (interestingly, Kessandria in the UK version, had access to a Swift Wind spell rather than a Potion of Speed so it was a conscious decision to switch to a Potion of Speed for the US version, despite that potion not being in the US version, doh!)
allows her to move 12 squares on the turn that she drinks it
As Kessandria has a base movement value of 6 this could either be interpreted as +6 to her movement or doubling her movement, two options that I refer to as the arithmetic and geometric options respectively.
I’m not a fan of geometric bonuses and/or penalties, doubling or halving something as these effects ramp up rapidly when stacked e.g., from a base value of 2 you can add 2 four times and get to a score of 10, but double it 4 times and you get to 32.
For that reason, I would instinctively prefer the +6 option.
Principle of Ambivalence, (good for a Hero then good for a Monster) +6 works for Heroes or Monsters, but in this example, it is +6 for a Monster, it could at a stretch be +2D6 for a Hero
In the Alchemist’s Shop for ROTWL there appears a Potion of Dexterity, which is pretty much a Potion of Speed by another name
+5 to movement OR automatic success for a jump
This leaves us with a discontinued Potion of Speed with one set of effects, a ‘hidden’ Potion of Speed with possibly a different set of effects and a third Potion of Speed with similar but slightly different effects under a different name
We also need to consider the ‘Swift Wind’ Spell in all of this, both US and UK*, consistently rated as one of, if not the most useless spell in the deck, this is apt for revision, and we would want to keep a distinction between the effects of the two.
*There is also a Japanese version of this spell which is quite different!
Solution Options
New Potion of Speed for HQ US
It will allow you to move 6 extra squares the next time you move and adds one to your roll for jumping
Not present in the treasure deck as I don’t want anyone to have to go to the trouble of printing new cards, but available to purchase in the Alchemists Shop, replacing Potion of Dexterity.
Amendment to the Swift Wind Spell
If you take the general principle that where potion and spell effects are similar, potions represent a short-lived, single turn but powerful boost whereas spells take a slower burn, less powerful but longer lasting effect
E.g., Courage & Potion of Strength, Rock Skin & Potion of Defence/Resilience
So, our Potion of Speed should have a powerful but short-lived effect, +6 or +2 extra movement dice for a single turn fits that bill whereas the Swift Wind would have something like +1 extra movement dice, spell lasts until you carry out an action that is not movement, have to defend yourself or your movement is ended by a trap.
I did consider the Japanese option which is basically a teleport spell but thought it would tread on the toes of Escape Spell and the Escape Ring
Thoughts?