@s031720: The R&D thing was true before Brood War – the expansion changed that, it is meanwhile possible to place gold orders before you have the R&D module for them. Brood War rulebook, page 5, section “Special Order Pool”.

Burrow, that’s quite a good use there

Im not certain, but I believe you need a R&D module in the orderphase to be allowed to place a special order. Thus building a R&D module during a turn will not allow for special orders until next turn.

Your assessment of burrow is pretty good but you neglected to mention that it works with infested terrans as well as defilers(rarely useful).

Inspired by a note somebody sent me on the Geek, I double-checked this, and indeed the Burrow card only works for Zerglings, Hydralisks and Defilers – so, no Infested Terrans

Your other points regarding burrow are very valid though, and I’ll add a little note pointing towards the comments in the section where I talk about it

Since most things aren’t factual errors, I guess I’ll leave them standing as is in the post, but I’ll make a note in the introduction to make sure people read the comments – yours is really tremendously helpful!

Your assessment of burrow is pretty good but you neglected to mention that it works with infested terrans as well as defilers(rarely useful). I found it most useful for a fast expansion strategy when the expansion planet may be contested and has 3+ sectors. It allows you to take all the spaces and save a unit when you get attacked. Burrow might also be useful for saving kerrigan every once in a while if you don’t have psi storm handy or don’t want to waste it.

Also Pneumatized Carapace + the assist module is really powerful. It allows you to attack a space with the unit limit+4 and completely overwhelm people. This is particularly good if you have defilers.

Infest command center can be distracting but it can also be really powerful because it acts as a pseudo collateral damage and allows you to build without a base. For instance lets say you get a mobilize on top of a build on a terran planet. You attack their base infesting it and preventing them from using any build or research orders remaining on it. Then when you execute your build you can get some infested terrans in the same order that you build your base. Even better if you have some hydras or mutas to transform with the same order, talk about bang for your buck.

I’ll edit the post and add this, thanks a lot for the note and your comment!