If you have two dredge cards in your graveyard and one of these in play, you can replace your draw step with a dredge trigger, trigger the Skimmer, then replace that draw with your second dredge card
In fact, it may even invalidate B/G/X in Modern as a viable strategy
But it's harder to cast in non-Mono-Green decks like Five Color format or Commander
Niv-Mizzet, Parun, Storm-Kiln Artist, and Archmage Emeritus are such great value engines, any spellslinger deck is happy to have them
Transcendent Dragon might be the coolest Mystic Snake ever printed
Art-wise, though not as eye-catching as Ajani, I find the new Foundations version a solid upgrade, for one main reason: her giant, luminous spirit pig is adorable and I want them to give me a great big ectoplasmic hug