Firemind's Foresight [Commander 2015] Oath of the Gatewatch Promos the only caste that cannot

the only caste that cannot be attained by either heredity or money is that of the hero

Set: Shadows over Innistrad Type: Creature — Angel Rarity: Rare Cost: {4}{R}{R} Flying

Set: Ice Age Type: Creature — Orc Rarity: Common Cost: {R} {T}

Might Type: Sorcery Rarity: Rare Cost: {4}{U}{U} Shuffle your library

Set: Lorwyn Type: Creature — Giant Shaman Rarity: Uncommon Cost: {4}{R} When Giant Harbinger enters the battlefield

Firemind's Foresight [Commander 2015] Oath of the Gatewatch Promos the only caste that cannotSet: Commander 2015 Type: Instant Rarity: Rare Cost: {5}{U}{R} Search your library for an instant card with converted mana cost 3, reveal it, and put it into your hand. Then repeat this process for instant cards with converted mana costs 2 and 1. Then shuffle your library.