Explosive potion

Explosive potions are found on tables in the equipment room of the Saradomin Castle as well as the Zamorak Castle in Castle Wars. They can be used on barricades to instantly destroy them as well as the enemy catapult. It can also be used to clear or collapse the cave walls in the underground tunnel connecting the two castles. This is a useful strategy that many players employ, since dropping the rockslide on another player instantly kills them.