Acquiring a Mirror Shield is straightforward but requires a bit of RuneScape gold preparation. You can buy it from any Slayer Master for a reasonable price. Before you can use it,you'll need a 20 Defence requirement to wield the shield. While the Mirror Shield is primarily defensive,it plays a crucial role in ensuring that you can effectively take down Cockatrices without constantly worrying about being turned into stone.
Relevant Drops

One of the main reasons players target Cockatrices is their diverse loot table,which includes valuable drops like medium clue scrolls,limpwurt roots,and various runes. Of these,the medium clue scrolls are especially prized,as they allow players to embark on treasure trails that reward them with rare and valuable items. 

Another notable drop from Cockatrices is the mystic boots (light). These are the only source of this rare and sought-after item,making Cockatrices a valuable target for collectors working to complete their mystic gear sets.
Medium Clues

Cockatrices drop medium clue scrolls at a relatively high rate. For players who enjoy the treasure trail aspect of OSRS,this makes them an ideal monster to farm for clue scrolls. These clue scrolls lead to a series of tasks that ultimately reward you with valuable items,such as cosmetics or useful gear. With the drop rate being favorable,Cockatrices provide an excellent opportunity for buy OSRS GP treasure hunters to rack up some worthwhile rewards.