Walkthrough guide on how to find the effects
Basalt:
The basalt effect is located on the basalt world, go down and a bit left and interact with the basalt ball.
Purple:
The purple effect is located on the purple forest, go down and follow the river until you find a purple girl, interact with her for the effect.
Dental:
The basalt effect is located on the dental world, follow the light blue path until you get to the corner, then go diagonal left down and interact with the teeth.
Flower-based:
The flower-based effect is located on the pink pradare, enter the dental world, go down a bit and then right, enter the red door and follow the path, then enter through the demon's mouth to get to the pink pradare, go up from the entrance and you will find a pink building, enter the building and interact with the blue rose flower.