Void Keys/ByKey/Tower I

Sorting tip: sort by least important criteria first, or hold Shift while clicking headings to sort by multiple criteria

Cells marked with a "✔" can drop the key listed at the top of the column.

Cells marked with a "Ø" can not drop the key according to rules set forth by DE.

Cells left empty mean that the corresponding key has not yet been found in that mission.