These spells and abilities allow you to deal with your opponents' early game threats while you build your shrine army, accelerate to more quickly play your shrine army, and card draw allows you to keep pressure on your opponent as you get to the mid to late game
You can go Voltron (and that's likely where most people will go), but you're in colors that support pillow fort, prison/stax, or even just plain stompy
If you choose not to cast a spell this way, it goes to the bottom of the library with the other exiled cards
I especially like Deflecting Palm in a deck with Sunforger or on a Isochron Scepter
The big picture Surveil provides an excellent example of conservation of design space
Related While the box includes a bunch of goodies to expand your Magic: The Gathering | Avatar: The Last Airbender collection, the standouts are six foil scene cards that can be placed in order to depict artist Fahmi Fauzis take on the Black Sun Invasion