SCP-151 | The Painting

Players craft the painting from cloth, then read the document placed with it by right-clicking. A structure generates on the Overworld surface, roughly one per 3000 blocks, and the locate command can find it. Shift with right-click places the painting. Looking at SCP-151 starts a vision that lasts more than 30 ticks, and in the second half of that span the effect takes hold.

Once the effect activates, oxygen begins to deplete slowly, and after 24 hours the player drowns. A creature in the mod also makes the painting drown players within the same 24-hour window. The total time before drowning can be changed with the scp151TimerLength game rule, measured in ticks, with a default of 24000. The scp151VisibleTimer rule can be set to true to show the timer.

The painting must be hung with the correct rotation. Shift with right-click rotates it while held, and the painting has to be turned back upright before it is hung again. The mod is compatible with the Painting mod. It is published for Forge on 1.20.1 only, and the client and server both need it. The mod is all rights reserved and not open source.