Theoretically, it represents cooperation that youll enlist others to accomplish what no waterbender could do alone (I cant tell you how tapping artifacts fits into that idea)
At the beginning of your end step, if you sacrificed a Food this turn, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle
After Ether's ability resolves, the next instant or sorcery spell you cast that turn will be copied whether or not it has targets and whether or not you spent the mana added by Ether's ability on that spell
some favorite options are Gurmag Swiftwing, Kefnet the Mindful, and Questing Beast
Whereas the first Charizard Ex card chewed up energy to use its strongest attack, the new card is much more economical
Reaper King as the commander