Naturally this makes lands like Ancient Tomb, Serras Sanctum, and Nykthos, Shrine to Nyx prime tutor targets for a lot of white decks, but if youre trying to find missing colors of mana in multicolor decks, simply being able to snag a Raugrin Triome or Temple Garden can also make the difference between getting off the ground or getting mana screwed
Cast cards with the squad ability early in the game to build up your defenses or pay extra mana later to make token copies of that card
At the critical moment, she halts the opponent's advance
It's all you want from a big, splashy creature, and has a whole bunch of easy ways to juice up its Annihilator trigger to be big enough to just knock a player out in one swing
They wont work as well as the face Commanders, but it has been a while since the secondary commander can be slapped in front and the deck doesnt lose a bunch of potency outright (both face commanders draw cards, so there is that to consider)