d8: Wilderness Setpiece & Dungeon Setpiece! - Lucky Pond & Smokeless Fireplace

Luck Pond

At the bottom of this clear, calm pond lie hundreds of coins of any kind, as well as a large bowl filled with bones of various humanoid creatures.

Throwing any coin into the pond will grant the thrower a +1 bonus to any one roll made in the next 24 hours, and throwing additional coins will give an additional +1 to the same roll, up to a total bonus of +5. Each person can get this bonus only once a year.
Trying to steal the coins will attract the rage of the two dozen nixies and a water elemental living in the pond. Should the nixies kill the greedy thief, they will feed on his flesh and put the cleaned bones in the bowl. Should all the nixies be killed, the pond will lose it's power.


Smokeless Fireplace

This heavy stone stove is constantly burning, yet it does not produce any smoke, nor need any fuel.

The stove gives off a pleasant warmth and light, but the fire does not burn at the touch. Accidental fires or rogue sparks are impossible.
Additionally, the stove only does that what the user intends to use it for: should someone put a pot full of water on the stove to boil it, the water will soon boil, but a forgotten knife left on it will not heat; should someone want to heat metal to forge it, the metal will quickly be glowing red; should someone wish to roast a deer, the meet will soon be cooked; lighting a torch in it works, and the torch will give off smoke as any normal torch.
However, the fire may not be used to directly hurt a living being: trying to burn someone alive on it will simply not work, but branding irons can still be heated in it.
The fire burns constantly and does not extinguish on its own. One could cover the fire basin with a board of wood, leave for months or years, come back and lift the unburnt wood to find the fire gleefully burning under it. The only way to truly extinguish the fire is by utterly destroying and smashing the stove to pieces.