First printed in Commander 2017 (2017)
All 17 prints
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Star Trek Commander (TRC) #493, 2026
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Foundations Commander (FDC) #264, 2026
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Marvel Super Heroes Commander (MSC) #287, 2026
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Final Fantasy Commander (FIC) #228, 2025
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Modern Horizons 3 Commander (M3C) #296, 2024
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The Lost Caverns of Ixalan Commander (LCC) #304, 2023
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Commander Masters (CMM) #953, 2023
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Tales of Middle-earth Commander (LTC) #280, 2023
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March of the Machine Commander (MOC) #360, 2023
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Warhammer 40,000 Commander (40K) #241, 2022
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Warhammer 40,000 Commander (40K) #241★, 2022
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Commander Legends: Battle for Baldur's Gate (CLB) #862, 2022
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Year of the Tiger 2022 (PL22) #5, 2022
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The List (PLST) #C17-53, 2021
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Jumpstart (JMP) #469, 2020
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Treasure Chest (PZ2) #65731, 2017 (digital)
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Commander 2017 (C17) #53, 2017
Artifact
As this artifact enters, choose a creature type.
Creature spells you cast of the chosen type cost 
less to cast.
At the beginning of your upkeep, look at the top card of your library. If it's a creature card of the chosen type, you may reveal it and put it into your hand.
- Illustrated by
- Jason Felix
Legality
- Legal in
- Legacy, Vintage, Historic, Timeless, Gladiator, Commander, Duel Commander, Tiny Leaders, Oathbreaker, Brawl, Competitive Brawl
- Not legal in
- Standard, Pioneer, Modern, Pauper, Future Standard, Alchemy, Penny Dreadful, Premodern, Old School 93/94, Pauper Commander, PreDH, Standard Brawl
Rulings (6)
- If you somehow control a Herald's Horn with no chosen creature type, no spells will cost less to cast, not even creature spells with no creature type. You'll be able to look at the top card of your library at the beginning of each of your upkeeps, but you can never put it into your hand this way, even if it's a creature card with no creature type.
- You can't choose multiple creature types, such as "Cat Warrior." A Cat Warrior is both a Cat and a Warrior. It's affected by anything that affects either type and unaffected by things that affect non-Cat or non-Warrior creatures.
- If you don't put the top card of your library into your hand, you put it back on top of your library without revealing it. You'll draw it in that turn's draw step.
- To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions. The mana value of the spell remains unchanged, no matter what the total cost to cast it was.
- You must choose an existing creature type, such as Vampire or Cat. Card types such as "artifact" can't be chosen.
- The effect of Herald's Horn reduces only generic mana in a spell's cost. If that cost has no generic mana, the cost isn't reduced.
Prices
MTGO price: 1.99 TIX, the cheapest non-foil print (average sell price on GoatBots, 1 Nov 2026).
Combos
57 combos, the most popular first:
- Infinite creature LTB, Infinite creature ETB…: Herald's Horn + Hibernation Sliver + Lavabelly Sliver + Metallic Sliver + Syphon Sliver
- Infinite damage, Infinite creature ETB…: Essence Sliver + Herald's Horn + Hibernation Sliver + Lavabelly Sliver + Metallic Sliver
- Infinite creature ETB, Infinite creature LTB…: Appa, Steadfast Guardian + Herald's Horn + Pearl Medallion + Restoration Angel
- Infinite creature ETB, Infinite creature LTB…: Appa, Steadfast Guardian + Cloud Key + Herald's Horn + Restoration Angel
- Infinite creature ETB, Infinite creature LTB…: Appa, Steadfast Guardian + Felidar Guardian + Herald's Horn + Pearl Medallion
- Infinite creature ETB, Infinite creature LTB…: Appa, Steadfast Guardian + Cloud Key + Felidar Guardian + Herald's Horn
- Infinite creature ETB, Infinite creature LTB…: Appa, Steadfast Guardian + Herald's Horn + Restoration Angel + The Wind Crystal
- Infinite creature LTB, Infinite creature ETB…: Herald's Horn + Skyfire Phoenix + Squee, the Immortal + Thermopod
- Infinite creature ETB, Infinite creature LTB…: Appa, Steadfast Guardian + Helm of Awakening + Herald's Horn + Restoration Angel
- Infinite creature ETB, Infinite creature LTB…: Appa, Steadfast Guardian + Felidar Guardian + Herald's Horn + The Wind Crystal
