Primal Command brings a lot of control and utility but it is rather unwieldy as a five mana sorcery that has relatively minimal impact on the board
(I think its reasonable to make an exception for top 8, though: at this point, theres a risk that some players have been on stream and others havent, and since players know who theyre going to play against, they could know who to watch or have their friends watch, and there could be an imbalance of information
The average Eldrazi threat really doesnt need much of a boost from typal support cards to end a game
Its a full-blown finisher when you can use it right, but that all depends on the cards that you end up drawing
Theros through Core Set 2015 Lands are the big hitters in this block
This helps keep the flow of bodies on board going, which in turn helps you mill as often as possible