The shape water cantrip has the following description:
Casting Time: 1 action
Range: 30 feet
Duration: Instantaneous or 1 hour (see below)
You choose an area of water that you can see within range and that fits within a 5-foot cube. You manipulate it in one of the following ways:
- You instantaneously move or otherwise change the flow of the water as you direct, up to 5 feet in any direction. This movement doesn’t have enough force to cause damage.
- You cause the water to form into simple shapes and animate at your direction. This change lasts for 1 hour.
- You change the water’s color or opacity. The water must be changed in the same way throughout. This change lasts for 1 hour.
- You freeze the water, provided that there are no creatures in it. The water unfreezes in 1 hour.
If you cast this spell multiple times, you can have no more than two of its non-instantaneous effects active at a time, and you can dismiss such an effect as an action.
I have 3 scenarios I have cooked up as an Arcane Trickster rogue to use this cantrip for cheating and forgery (detailed below):
- Cheating at cards
- Cheating at dice
Cheating at cards
I have a deck of blank cards. Theoretically, I can paint the cards with water and "change the water's color". With this in place, given that the other players are holding their cards within the 5x5x5-foot box, I should be able to manipulate the state of the cards simply by recasting the spell (e.g. swap an ace and a two).
Would this setup be counted as one instance of "no more than two of its non-instantaneous effects active at a time", or once per card in the deck?
Cheating at dice
I have a set of blank ivory dice: a cubic frame with six sides. I would fill the frame with water and freeze it. Using holes in place of painted dots would allow ice to show through. By coloring each hole as black or white, I could affect the number of pips shown on each side while all the water stays in continuous contact.
Assuming I'm playing with two dice, and each constitutes one instance of "no more than two of its non-instantaneous effects active at a time", would this pass even the most stringent interpretations of the shape water spell?
I have a blank legal document – or better yet, one that has been filled out with information totally irrelevant to my use case (different name, different legal context).
Can I use shape water to paint it and overwrite some or all of the document with the intention that it reverts back to its original wording once the 1-hour duration of the spell ends?
Do I have to remain in the 30-foot range for the shaped water to remain?
I know I have asked multiple questions here, but the underlying theme is the same:
What are the limitations for using shape water for cheating and for forgery?