If you find its mana cost a bit too much, then opt for the Plot mechanic, which does delay the casting but also reduces the cost by a single green mana
I see her fairing better in the long run, however, than the location/song cards on this list given her status at Disney Princess
But, obviously, the fetch lands break the no-explicit-reprints rule of the first Modern Horizons
Stampede the table by ramping early, then crash in with Gishath, Suns Avatar to cheat multiple Dinosaurs straight onto the battlefield
A cool play involves casting Elven Ambush at the end of your opponents turn to make a lot of elves and activate your commanders ability, then untap and repeat the process
Aside from being nice to look at, they do each require a bit of know-how to use them properly, with some pros and cons any time you want to put one in a deck