Archetypes like Devoted Druid combo or Heliod, Sun-Crowned combo often make use of Ranger-Captain of Eos for a few reasons
Many frog commanders play in spaces that tie into having lands in your graveyard, whether youre sacrificing them to The Gitrog Monster or milling / surveilling them with Grolnok, the Omnivore or Glarb, Calamity's Augur
On the first chapter, you make a 2/2 Goblin and Shaman dork and when it attacks, you ramp by a Treasure token
The Knights Templar Creature (24) 1x Angel of Glory's Rise 1x Ashen Rider 1x Ayli, Eternal Pilgrim 1x Black Knight 1x Bloodsoaked Champion 1x Body Snatcher 1x Corpse Connoisseur 1x Drogskol Cavalry 1x Emeria Shepherd 1x Fiendslayer Paladin 1x Haakon, Stromgald Scourge 1x Kabira Vindicator 1x Kambal, Consul of Allocation 1x Knight Exemplar 1x Knights of the Black Rose 1x Lightwielder Paladin 1x Lone Rider Flip 1x Magister of Worth 1x Markov Dreadknight 1x Mirror Entity 1x Noble Templar 1x Stillmoon Cavalier 1x Vizkopa Confessor 1x White Knight Artifact (7) Land (37) 1x Blighted Fen 1x Caves of Koilos 1x Concealed Courtyard 1x Desert of the Glorified 1x Desert of the True 1x Drifting Meadow 1x Evolving Wilds 1x Exotic Orchard 1x Forsaken Sanctuary 1x Gargoyle Castle 1x Orzhov Guildgate 10x Plains 1x Rupture Spire 1x Scoured Barrens 13x Swamp 1x Vivid Marsh Sorcery (10) 1x Beacon of Unrest 1x Collective Brutality 1x Crux of Fate 1x Damnable Pact 1x Descend upon the Sinful 1x Hallowed Burial 1x Obzedat's Aid 1x Ruinous Path 1x Twilight's Call 1x Unburial Rites Planeswalker (2) Commander (1) Enchantment (10) 1x Banishing Light 1x Call the Bloodline 1x Campaign of Vengeance 1x Crusade 1x Deadly Designs 1x Marshal's Anthem 1x Oblivion Ring 1x Phyrexian Arena 1x Shadows of the Past 1x Unhallowed Pact
Skullhorn can also be combined with other cards to amplify the intimidation factor
