If you can spend some extra money, youll want to replace those with better fetch lands
For the Ancestors The slivers deck is bringing a few goodies with its new cards, and For the Ancestors isnt just wanted for sliver decks
As I alluded to before, the Thallids (named after the now defunct taxonomic group Thallophyta ) are fungal creatures created by the elves, which in turn create smaller creatures (which may just be their larval stage) called the Saprolings
If you want to learn the general rules for playing battle cards, you can check our short guide here
This is a slight upgrade overall if youre a cycling deck, though realistically youll probably just run both
In this sense, your gameplan lines up relatively well in the current metagame