A Turn 1 Dryad Arbor isn't really any different from a Turn 1 Llanowar Elves or Elvish Mystic, and while this is true on Turn 1, the big difference is that Green Sun's Zenith is both a Llanowar Elves on Turn 1 and a Primeval Titan on Turn 5 or 6 (depending on how much you ramp)
Decks like The Wise MothmanThe Wise Mothman, Captain N'ghathrodCaptain N'ghathrod, and The MindskinnerThe Mindskinner will want The Water CrystalThe Water Crystal the most, as it turbo charges their milling shenanigans quite a bit
Traditionally you never want to be scrounging for playables in a tribal deck because the bottom of the barrel can get very grimy
But what do you think about Mangara
If a triggered ability asks you to pay a cost (such as that of Mirrorworks), you pay that cost for the copy separately
In short, every Magic card is associated with one or more of the five MTG colors - White, Blue, Black, Red, and Green - and cards matching different color combinations can be jumbled up in all sorts of ways when you build a Magic: The Gathering deck