Balthier and Fran from Final Fantasy XII The awesome duo from FFXII gives benefits to Vehicles you control, and can even add an additional combat phase if you have the mana to spare
Ultimates are also the main thing in the game capable of generating Emblems (a few minor emblems are generated by some plusses and minuses, and a few big spells can have game-altering effects that arent called emblems but are similar.) Emblems can do a lot
One of the easiest ways to make a planeswalker boring is to put them on rails, more akin to a Saga than a planeswalker
Location benefits can be passive or triggered, while some - such as Forbidden Mountain - dont seem to do much of anything
The one-damage pings can add up quickly, and like Dancer's ChakramsDancer's Chakrams, this can survive normal creature wipes and go back online pretty quickly
Warrior of Light helps you jam all of your favorite Legendary heroes from the main set, the Commander product, and the Through the Ages bonus cards respectively ( FIN, FIC and FCA)