Extended super antifire

An extended super antifire potion is a potion that provides complete immunity against dragonfire for exactly 6 minutes (24 minutes per 4-dose potion).

It can be made by a player with 98 Herblore by mixing a super antifire and lava scale shards, which grants 40 Herblore experience is granted per shard added, or 160 Herblore experience if they put in four shards into a 4-dosed potion. One dose is created per shard, so four shards will be needed to create a four-dosed extended antifire. Players with at least 99 Herblore can mix caviar into a 2-dose extended super antifire mix.

Players will get a warning in their chatbox when the potion is about to wear off: "Your resistance to dragonfire is about to run out." Then they will get another message when it has worn off, approximately 15 seconds after the initial warning: "Your resistance to dragonfire has run out." This allows you to keep track of how long you have until you have to drink again.