The mono-green planeswalker has plenty of fans among the casual crowd, and she’s extremely good in Elf builds. She currently sells for about $65 and buylists at a max of about $4. So while she’s not the top buy in the set right now, planeswalkers have lots of long-term value, so she’s still worth picking up. When she gets hot, her supply will dry up super fast. Freyalise is probably the best of the planeswalkers that can serve as your commander, and so she’s probably the best long-term buy in the entire set - outside of perhaps Legacy-playable Containment Priest.
Selling for about $3 and buylisting for around $1.50, Titania, Protector of Argothia is a cool Commander card that has seen Legacy play in Sylvan Plug decks. Her effects are very good. She can return a land card from the graveyard to the battlefield when she enters play, allowing you to reuse a fetchland or another land otherwise sent to the grave. Then, whenever a land you control goes to the graveyard from the battlefield, you get a 5/3 Elemental creature token. Talk about value.
Titania seems like she would be a Legendary Creature whose supply would dry up quickly. But supply is currently as high as ever. While the spread (buylist vs retail) is not as high as others on this list, the supply of this Legendary Creature will dry up eventually. She's unlikely to see a reprint anytime soon, so she's a solid long-term hold.
With mono-Black extremely popular in casual circles as well as Commander, Ob Nixilis is a very good planeswalker. He’s currently the second most valuable of all the Commander 2014 planeswalkers that can be used as Commanders. He’s buylisting for about a dollar under his lowest retail price, so the demand is real. With the black deck containing lots of useful cards such as Black Suns’ Zenith, Crypt Ghast, Ghoulcaller Gisa, and others, supply of the deck he comes in will disappear before long. His abilities are all good, so there’s no reason not to play him.
With Elves a super hot tribe right now, it’s not a surprise to see Immaculate Magistrate being buylisted for around retail. However, this is a reprint from Lorwyn, and there’s also a Duels of the Planeswalkers foil version out there. Still, this is the cheaper version. But it won’t stay that way. With a tap ability that can be played at instant speed, the Magistrate can make blocking nightmare for your opponent, and the target creature doesn’t have to be an elf (think Hydra Omnivore or Craterhoof Behemoth!) The power and toughness boost is also in the form of +1/+1 counters, not of the end-of-turn variety.
Continuing with the trend of Elves being bought up like crazy, the Priest of Titania reprint from Commander can be had for as little as $1.25 and can be buylisted for around $1. On the flip side, the original Urza’s Saga version isn’t buylisting well at all, as it seems many players prefer the Modern bordered version.
It’s still a pretty safe investment to get a play-set of these if you’re planning on playing them at any point, as they shouldn’t be getting any cheaper. This is probably the best mana dork that Elves have, so it’s worth having these around.
Hydras tend to have plenty of casual appeal, but this one is extremely good. It does have triple-Green in its mana cost, but for Commander players this is absolutely fine. Decks that care about Devotion especially like this one. It has trample, so it’s scalable damage that can’t simply be chump-blocked. When it dies, it nets you life and cards depending on how much mana you sink into it.
As a Commander exclusive, this is a pretty good investment, and supply is quickly drying up as it is a card that can fit into a wide array of decks. At $2, it’s a great pick-up, as buylists are grabbing them at only about 50 cents under retail to keep up with demand.