Copying Mind's Eye to draw another card or the triggered ability of Solemn Simulacrum's ETB to fetch another land or Spine of Ish Sah and Meteor Golem to destroy another permanent
It's great for landfall decks that constantly throw lands out, and it's great for slower decks that just need to ensure they get some kind of ramp each turn
Sets that primarily take place there : Ixalan and Rivals of Ixalan Planeswalker natives (with planeswalker cards) : Huatli Ixalan is a plane with a Mesoamerican inspiration that first showed up in Ixalan and Rivals of Ixalan
With undying creatures, the -1/-1 counter cancels the +1/+1 counter on return, creating repeatable loops
Thanks to the staying power given by the blue and white colors, Forces of the Imperium will be able to pull out any token strategy they wish at any point in the game
As you can imagine, though, there are some potential commanders that offer you all the colors