My initial thought was that they should mostly count as spell slots that can help ensure your land drops early on, but over time as Ive played with them, Ive concluded that its more complicated than that
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Elves are the predominant creature used to represent greens color identity of harmony with nature and abundant growth, which gets reflected in the types mechanical identity that often produces mana and makes your elves better when you have more elves
Zndrsplt, Eye of Wisdom is incredible
Effectively, Commander often results in a game of politics, where you obfuscate how powerful you are, whilst making deals with other players, to come crashing through for the win
Beyond that, there is a huge variety of general support for dodging blockers across red, blue and black: its a mechanical theme shared by ninjas, pirates and rogues across all three colors, as well as the new pseudo-type of outlaw creatures defined in Outlaws of Thunder Junction