Puro -

This is a popular third-generation lentiviral CRISPR/Cas9 vector backbone used to express single guide RNA (sgRNA). Puro Puro Guide: Everything you need to know (2021) | OSRS

: Almost all impling types except Crystal implings can be found here, ranging from Baby to Dragon and Lucky implings.

: A permanent portal is available in the wheat field east of the fairy ring if you have completed the Lost City quest.

: You need an impling jar and a butterfly net (though jars alone allow for barehanded catching with high enough Hunter levels).