Area of effect spell marker

I’ve got a summoning circle image which looks somehow like this
alt text

I need it to show in front of a player above the ground - it’s the location where the spell will take effect. The problem is I need it to be somehow ‘covering’ the ground like a blanket. It can’t be stiff because then it cuts through terrain. Is this even possible?

There are several tools that do what you want with varying efficiency.

The built in projector component is one example.
There are also decal systems out there that you can buy. At least one in the asset store.
Or you can create one yourself.