Lookup Macro for multiple tabs

Hi, I would love if someone could help me with a macro/program that pulls certain items from different tabs in a specific order/column. Here's what I mean:

1. All Features are pulled from the Feature tab into the master tab's column A.
2. Starting on the row below the last feature, Master tab's column B displays the next tab's Column C listed row-by-row.
3. Then the last 3 tabs stay in the same Master Column (B), but start once the previous tab has been populated.

I've created a visual example in the attached excel. It is a basic version, as mine will have about 15,000 rows, so I need it to translate.

Thanks in advance for your help!

-Excelnoob