A simple build for a small bubble [Limbo]. 4th has a 90 sec duration, which is A LOT, besides 2nd which lasts half that time. For mobile defenses, it covers the time it takes to complete one whole station. Also for excavations it is useful. Let's try not to make it so big due to nullifiers destroying our bubble.
You can change [Natural Talent] with [Vitality] if you feel safier but there's really no point. Also this mod is so useful because [Limbo] takes an hour to cast his 4th. Another idea with this build is to have [Nyx]'s mind control since you're running a high duration build. Having a slave could be useful. With [Energy Siphon] plus [Limbo]'s passive, you'll be winning enough energy to cast your abilities, and with this same build, a sortie's mobile defense with energy reduction will not be a problem for sure.

Advantages:

• Bubble protects a short place for a very long time which gives you energy saving and it's more difficult for a nullifier to break it.
• Enemy paralysis also lasts a lot, you'll only need to use it 2 times per bubble and in some cases, only 1 time.

Disadvantages:

• For a large place like an interception will not cover too much space.