Using
http://www.gatheringmagic.com/?page_id=3888 as a reference, these are the cards I'd actually use on a reasonably regular basis:
Wrexial, the Risen DeepQuest for the Goblin LordRoiling TerrainSejiri MerfolkThada Adel, Inquisitor
Tectonic EdgeAvenger of ZendikarLoam LionArchon of Redemption"greenwhite dual manland" (that's all this spoiler says, but the text looks great for Land Ho :p)
Marshal's AnthemTerastodon (reanimator ftw!)
Creeping Tar PitDispelAmulet of Vigor (there's gotta be a combo deck out there with this...)
Death's Shadow (HOLY COW THIS IS SOOOO COOL)
Anowon, the Ruin SageNovablast WurmPulse TrackerStone Idol Trap (also cool)
Raging RavineLavaclaw ReachesLodestone GolemBestial Menace (if there's a way to avoid using 4 csv slots for it)
Dragonmaster Outcast (and I thought
Scute Mob was fun...)
Kalastria HighbornAdmonition AngelKor FirewalkerQuicksand (it's baaaaaaack)
Dread Statuary (for Land Ho, but the other manlands in this set are way better)
Quest for the Nihil StoneJoraga WarcallerJace, the Mind Sculptor (if doable; his last ability looks hard to code, but the rest have already been done)
Celestial ColonnadeAlso, all the Ally cards, including the white instant that makes 2 ally soldiers, because I had a lot of fun with a 499-card Ally theme deck :p
If I have to choose ten cards that are the most important to me of those, they would be
1) Thada Adel, Inquisitor (Merfolk creature type on a card that already does something quite useful)
2)
Tectonic Edge (a more balanced
Wasteland but still a nice card)
3)
Loam Lion (Move over,
Savannah Lions... Funny thing is,
Loam Lion is better with
Savannah than
Savannah Lions. This is also a two minute coding job, just hack
Kird Ape's colour, name, cost, and subtype. Done.)
4)
Death's Shadow (If I could have one card in this set, it would be this. Combos I can think of right off would be
Lich,
Necropotence,
Infernal Contract, and half the stuff in a normal Sui Black list, like
Carnophage,
Dark Confidant, etc)
5)
Lodestone Golem (
Juggernaut met his match... a 5/3 for 4 mana AND he makes spells more expensive? I'd play him in Stax and a lot of other decks)
6)
Joraga Warcaller (1/1 for G in an emergency, a typical Lord for 1GG, or an uber lord for 2GGG. Or even more... PLUS he's also a warrior, so he combos very well with
Bramblewood Paragon, also an elf, and another favourite of mine)
7)
Jace, the Mind Sculptor (I like planeswalkers... note that his
Brainstorm ability actually nets card advantage after the 2nd and further use)

Allies (for themed decks; I didn't even really read half of them :p)
9) Dual land manlands (some of the best dual lands outside Alpha, and one of the very few sets not strictly inferior to Alpha's, the only others I am aware of in that category being the Refuges that gain 1 life, and
Horizon Canopy)
10)
Kor Firewalker (this is SICK. Soldier subtype for soldier decks, prot red, 2/2 for WW makes him a decent weenie, AND he completely owns burn decks AND he gains you life if you play red, too! This guy's gonna be everywhere...)
This being the first time I looked at the cards in the set, my initial impressions are that the few cards that are good are GOOD, but there's a lot of stuff that will never see the light of day. Some of the weenies in this set will be around forever, like
Loam Lion or
Kor Firewalker. (Or
Death's Shadow, if he counts as a 'weenie'; he's in the same boat as Phyrexian Dreadnaught that way)
Tectonic Edge will be a beast in type 2, but it'll never see Type 1 play unless
Wasteland gets restricted. The dual lands will be an awesome budget alternative to alpha duals, and I expect they will be everywhere in T2 as well. It seems like red really got the short end of the stick on this set, though; it is really, really lousy. Blue isn't that hot, either. White and black struck gold, and green is looking pretty good, too.
Specific to Manalink, I think the lands will be a HUGE asset for Land Ho, and
Death's Shadow is going to simply own, particularly in challenges like Chipping Away (can you say turn 1 11/11?) where you are losing life so fast that by turn 3 or 4, it's already going to be a monster.
Loam Lion is also going to help white weenie, which I found is a very good deck in many challenges, due to having speed, cheap removal, and lifegain.