Darius's Sickening Surprise

You create three clear sticky bubbles and send them to any space you can see within range, the bubbles can stick to any surface including walls and ceilings but must be somehow pierced or their surface broken (such as by a footfall) for the trap to activate. It takes one action to cast the spell and a bonus action to dismiss the bubbles.

The bubbles are clear, around 2ft in diameter and an inch high, without prior knowledge of the casting they are very difficult to spot. Each bubble must be placed in its own 5ft square, you cannot ‘stack’ them in one space. When a creature moves into a bubble’s space or the bubble is broken by some other means, it bursts with a violent spray of green toxic energy dealing poison damage to anyone occupying the space of the bubble.

Any creature in the space of the bubble must make a dexterity save against your spell save DC or take 6d4 poison damage. If a creature burst the bubble them self and they did not have any knowledge of the spell being cast or the bubble’s presence, they have disadvantage on their save. Anyone who sees you casting the spell must make an perception check against your spell save DC to see where the bubbles were cast to. If you move out of range of the bubbles or they last for longer than an hour the bubbles liquify into a foul smelling ooze that leaves a green stain that no amount of cleaning can remove.

When you cast this spell using a spell slot of 4th level or higher, the damage increases by 2d4 for each slot level above 3rd.