Use only one of these - Delays Dragonborn until completing The Horn of Jurgen Windcaller

Use only one of these - Delays Dragonborn until completing A Blade in the Dark

Use only one of these - Delays Dragonborn until completing Alduin's Wall

Use only one of these - Delays Dragonborn until completing The Throat of the World

Use only one of these - Delays Dragonborn until completing Elder Knowledge

Use only one of these - Delays Dragonborn until completing Alduin's Bane

Use only one of these - Delays Dragonborn until completing Dragonslayer