In Magic 2015 , Ajani Steadfast became the first planeswalker capable of putting loyalty counters on other planeswalkers
If you have a Sobble in your active spot , try to attach an Energy Card to it, as itll let you use its Keep Calling move , which will let you look for other Sobble, a Drizzile, or an Inteleon
In the end, in order to use it properly, it is necessary to use various cards such as parasite paracide or DNA modification surgery card to change the entire field insect group + insert barrier , as Insector Haga did in the original work, but it is not very strong
Obviously it is cheaper but it can also work for you when guys are not attacking
We made it -13/-13 for style, as the number thirteen is a common theme in all the Innistrad sets
You can also go and find it pre-emptively (whenever your Saga goes off) and still have it around for when its needed