Celestial Dragons are commonly killed for their various noted drops, great experience, and the ease of killing them. Celestial Dragons will only attack with their dragon breath when killing them from a distance, and the damage from their dragon breath is negated completely when using Super Antifire potions, meaning defensive armour and food is not necessary. Celestial Dragons also drop congealed blood. This is stackable, however it does not sell very well on the Grand Exchange and may not be worth the effort or inventory space.