Eva's Block Finder

Allows the player to search for specific blocks within a configurable space. Is not continuous, as that would put a lot of strain on the system.
The volume it searches is based on two configurable numbers. The actual range is based on the horizontal range, while the vertical range is a limiter to prevent it from taking an absurd amount of time, as I experienced some while testing it.

When searching for blocks, it will identify blocks that are not visible but are within the loaded area, but it will not highlight them until they become visible. This is not an X-ray.

Also, increasing your search rate comes with increased searches per tick, and a lower tick rate.

The default keybinds for this are comma and period, but it probably shouldn't matter what you use, as it's not intended to be a frequent thing.

They both search, but for different things.
The one bound to period by default searches for blocks that are in a list in your config menu, while the one bound to comma searches for a block in one of your hands; will not search for both, and prioritizes the main hand.
It doesn't cause a problem if there's no block in either hand, but it also just won't search at all.