If youre running a lot of basic lands or lands that enter the battlefield tapped, this is an opportunity to make your deck more streamlined and consistent
Its loyalty increases with each card drawn, adding yet another layer of torment to anyone that would dare try to remove it through combat
From the Rubble Repeated reuse of your creatures and no additional cost: These are excellent traits for reanimation
Since Forsaken Monuments works equally well with artifacts as it does Eldrazi, it's a popular card for several Commander archetypes
It doesn't wear off during the cleanup step, and it doesn't expire if Agent of Treachery leaves the battlefield
While the game is originally designed for two players, it can accommodate three, four, or more players