Though five mana to reanimate a creature is a rather steep cost, if you're able to fill your graveyard with mana-intensive Elementals, Horde Of Notions can allow you to flexibly cast splashy and game-winning cards when your opponents would least expect it.
The unfortunate problem, though, is that the Hammer has a far higher up-front cost, and when it comes to competitive Constructed formats, less is usually more - especially in a case like this
To be fair, this was a rare, unlike the rest of the cycle of 1-mana boons, but I dont think Richard Garfield and the rest of the designers of the early set couldve realized how powerful drawing cards can be
It includes a mix of creatures, ramp spells, and support cards to ensure a consistent and powerful gameplay experience." - EDHGen.ai Creature (19) Squee, Goblin Nabob|$0.20 Etali, Primal Storm|$0.49 Radha, Heir to Keld|$0.13 Ghalta, Primal Hunger|$0.65 Ruric Thar, the Unbowed|$0.36 Urabrask the Hidden|$2.08 Courser of Kruphix|$1.87 Rishkar, Peema Renegade|$0.17 Primordial Sage|$0.52 Thopter Assembly|$0.27 Vrondiss, Rage of Ancients|$0.56 Workhorse|$1.72 Heartless Hidetsugu|$1.50 Platinum Angel|$6.50 Anara, Wolvid Familiar|$0.50 Saber Ants|$0.30 Palladium Myr|$0.84 Woodfall Primus|$0.93 Lotus Cobra|$2.50 Planeswalker (2) Domri Rade|$1.32 Xenagos, the Reveler|$1.09 Instant (5) Hunter's Insight|$0.33 Chord of Calling|$5.34 Second Harvest|$1.41 Titan's Presence|$0.31 Momentous Fall|$2.26 Sorcery (9) Harmonize|$0.21 Eldritch Evolution|$1.61 Primal Surge|$5.19 Cultivate|$1.00 Explosive Vegetation|$0.31 Soul's Majesty|$1.39 Overwhelming Stampede|$2.04 Genesis Wave|$0.28 Gaea's Blessing|$0.29 Enchantment (22) Warstorm Surge|$2.25 Outpost Siege|$0.20 Rhythm of the Wild|$2.93 Song of Freyalise|$0.46 Sarkhan's Unsealing|$0.84 Death's Presence|$0.29 Gruul War Chant|$0.27 Gratuitous Violence|$0.70 Dictate of the Twin Gods|$1.28 Evolutionary Leap|$1.47 Guardian Project|$9.08 Lurking Predators|$8.16 Greater Good|$3.10 Descendants' Path|$2.43 Lignify|$2.00 Shared Animosity|$0.83 Perilous Forays|$3.01 Fires of Yavimaya|$0.91 Sunbird's Invocation|$0.36 Trial of Strength|$0.06 Beastmaster Ascension|$5.53 Zendikar's Roil|$3.49 Artifact (9) Panharmonicon|$5.98 Smuggler's Copter|$2.72 Cauldron of Souls|$4.04 Conjurer's Closet|$2.71 Sol Ring|$2.00 Eldrazi Monument|$6.12 Nim Deathmantle|$3.99 Ashnod's Altar|$8.76 Animation Module|$1.40 Land (33) Rootbound Crag|$0.76 Hanweir Battlements|$1.00 Game Trail|$0.16 Rogue's Passage|$0.47 Skarrg, the Rage Pits|$1.37 Kher Keep|$0.13 12xForest|$null 6xMountain|$null Buried Ruin|$1.62 Shifting Woodland|$5.80 Restless Ridgeline|$0.68 Command Tower|$1.00 Rockfall Vale|$0.76 Gruul Turf|$0.18 Evolving Wilds|$0.70 Copperline Gorge|$2.00 Thornspire Verge|$7.68
Not limited to Instants, provided you have ways to get around that like High Fae Trickster or Vedalken Orrery
MTG Arena has its Explorer format, which for all intents and purposes is Pioneer-lite
