2, T, Sacrifice this artifact: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.
When this artifact is put into a graveyard from the battlefield, you may pay G. If you do, draw a card.
Expedition Mapramp$1.47A cheap colorless artifact that helps fix mana by tutoring a land directly from your library. It does not put the land into hand immediately like Horizon Spellbomb, but serves a very similar utility role.
Wayfarer's Baubleramp$0.69One of the closest budget ramp analogues: a 1-mana artifact that converts into a basic land onto the battlefield. It accelerates mana more directly, though it costs more to activate.
Traveler's Amuletramp$0.05A colorless one-mana artifact that sacrifices to find a basic land and put it into hand. It mirrors the land-finding half of Horizon Spellbomb very closely, but lacks the card-draw mode.
Terrarionramp$0.12A cheap artifact that fixes mana by finding basic lands and replaces itself when sacrificed. Like Horizon Spellbomb, it provides utility and a card-neutral artifact slot.
Prismatic Lensramp$0.38A low-cost colorless mana-fixing artifact that smooths draws and supports multicolor decks. It is less direct land search, but fills a similar early-game fixing role.
Chromatic Starutility$0.33A classic one-mana fixing artifact that replaces itself when it goes to the graveyard. It does not fetch lands, but it shares the cantrip utility pattern of Horizon Spellbomb.
Chromatic Sphereutility$0.41Another efficient cantripping mana-fixer that helps smooth draws and color requirements. It trades land tutoring for broader fixing and immediate replacement.
Scrying Sheetsutility$3.72If you specifically want card advantage tied to snow basics, this provides repeatable land-based value. It is slower and lands-based rather than artifact-based, but plays a similar long-game resource role.