Tavern Recruiting

A "Common" recruitment always produces a Common (1*) hero.

An "Uncommon" recruitment seems to have a 50% chance of producing an Uncommon (2*) hero, and a 50% chance of producing a Common (1*) hero.

A "Legendary" recruitment seems to have about a 5% chance of producing a Legendary (5*) hero, about a 20% chance of producing an Epic (4*) hero, and about a 75% chance of producing a Rare (3*) hero. During an event, the bonus hero seems to have about a 5% chance for the Rare (3*) event hero, and no more than about 1% for the Legendary (5*) event hero.

All recruitments result in non-event heroes. The only way that an event hero comes from the Tavern is Rare or higher recruitments have a small probability of also producing a bonus hero which is the event hero of the week.