Jester's Cap [Ice Age] Elder Dragon the only caste that cannot

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

Set: Alara Reborn Type: Legendary Artifact Creature — Human Wizard Rarity: Mythic Cost: {2}{W}{U}{B} At the beginning of your upkeep

Set: Scourge Type: Legendary Creature — Sliver Mutant Rarity: Rare Cost: {W}{U}{B}{R}{G} {3}: Search your library for a Sliver card

Set: Alpha Edition Type: Creature — Skeleton Rarity: Common Cost: {1}{B} {B}: Regenerate Drudge Skeletons

The stench in the hovel was overpowering

Jester's Cap [Ice Age] Elder Dragon the only caste that cannotSet: Ice Age Type: Artifact Rarity: Rare Cost: {4} {2}, {T}, Sacrifice Jester's Cap: Search target player's library for three cards and exile them. Then that player shuffles. "Know your foes' strengths as well as their weaknesses." Arcum Dagsson, Soldevi Machinist