This will give them Asmodeuss draw-denying downside, without access to the activated abilities that overcome it
It also has the opportunistic patterns of Orcish Bowmasters, and it feels good to draw cards while your opponents fetch for lands, for example

Fae Dominion Precon Upgrade View on Archidekt Commander (1) 1 Tegwyll, Duke of SplendorTegwyll, Duke of Splendor Artifacts (12) 1 Alhammarret's ArchiveAlhammarret's Archive 1 Altar of DementiaAltar of Dementia 1 Arcane SignetArcane Signet 1 Ashnod's AltarAshnod's Altar 1 Bubbling CauldronBubbling Cauldron 1 Dimir SignetDimir Signet 1 Mind StoneMind Stone 1 Phyrexian AltarPhyrexian Altar 1 Robe of the ArchmagiRobe of the Archmagi 1 SkullclampSkullclamp 1 Sol RingSol Ring 1 Talisman of DominanceTalisman of Dominance Instants (12) 1 Arcane DenialArcane Denial 1 ConsiderConsider 1 Fact or FictionFact or Fiction 1 Frantic SearchFrantic Search 1 Illusionist's GambitIllusionist's Gambit 1 Keep WatchKeep Watch 1 OptOpt 1 Reality ShiftReality Shift 1 Reckless SpiteReckless Spite 1 RepulseRepulse 1 Spell StutterSpell Stutter 1 Thrilling EncoreThrilling Encore Creatures (23) 1 Archmage of EchoesArchmage of Echoes 1 Faerie BladecrafterFaerie Bladecrafter 1 Faerie FormationFaerie Formation 1 Faerie ImpostorFaerie Impostor 1 Faerie MastermindFaerie Mastermind 1 Faerie SeerFaerie Seer 1 Faerie VandalFaerie Vandal 1 Flitting GuerrillaFlitting Guerrilla 1 Glen Elendra ArchmageGlen Elendra Archmage 1 Hypnotic Sprite // Mesmeric GlareHypnotic Sprite // Mesmeric Glare 1 Likeness LooterLikeness Looter 1 Nymris, Oona's TricksterNymris, Oona's Trickster 1 Obyra, Dreaming DuelistObyra, Dreaming Duelist 1 Old FlitterfangOld Flitterfang 1 Oona, Queen of the FaeOona, Queen of the Fae 1 Puppeteer CliquePuppeteer Clique 1 QuicklingQuickling 1 Rankle, Master of PranksRankle, Master of Pranks 1 RingskipperRingskipper 1 Shadow PuppeteersShadow Puppeteers 1 Surveilling SpriteSurveilling Sprite 1 Talion's MessengerTalion's Messenger 1 Talion, the Kindly LordTalion, the Kindly Lord Enchantments (9) 1 Arguel's Blood Fast // Temple of AclazotzArguel's Blood Fast // Temple of Aclazotz 1 AttritionAttrition 1 BitterblossomBitterblossom 1 Exquisite BloodExquisite Blood 1 Grave PactGrave Pact 1 Reflections of LittjaraReflections of Littjara 1 Sanguine BondSanguine Bond 1 Vampiric RitesVampiric Rites 1 Wound ReflectionWound Reflection Sorceries (8) 1 Blood TitheBlood Tithe 1 Consuming VaporsConsuming Vapors 1 Distant MelodyDistant Melody 1 ExsanguinateExsanguinate 1 Fraying OmnipotenceFraying Omnipotence 1 Kindred DominanceKindred Dominance 1 Nightmare UnmakingNightmare Unmaking 1 Tegwyll's ScouringTegwyll's Scouring Lands (35) 1 Bojuka BogBojuka Bog 1 Choked EstuaryChoked Estuary 1 Command TowerCommand Tower 1 Darkwater CatacombsDarkwater Catacombs 1 Dimir AqueductDimir Aqueduct 1 Exotic OrchardExotic Orchard 1 Faerie ConclaveFaerie Conclave 10 IslandIsland 1 Myriad LandscapeMyriad Landscape 1 Path of AncestryPath of Ancestry 1 Secluded GlenSecluded Glen 1 Sunken HollowSunken Hollow 11 SwampSwamp 1 Tainted IsleTainted Isle 1 Temple of DeceitTemple of Deceit 1 Temple of the False GodTemple of the False God In Conclusion Fae Dominion has some great cards in it

Alandra, Sky Dreamer
Even with the 50% more effect than Sleight you will find that Adventurous Impulse is less good sooner than the maths would suggest (ie when your deck is a third non-creature, non-land cards)
Well, you better go catch it