Build for Survival. My build is focused on transforming [Yareli] in Strength beast to get best amount of Health on Merulina. Primed [Yareli] have more energy soo I don't need more than 45% energy at start to activate Roar and later Merulina. You can use Zenurik with 1st ability to cast and restore energy or use energy capsules.

They may be better warframes for survival but I like beign cute peepoHappy.

To get the best amout of shield on Merulina you need:
1. Shot enemy with status to activate [Growing Power]
2. Use Roar
3. Jump into operator and use ability to activate Molt [Vigor].
3.5 (OPTIONAL) If [Growing Power] dissapear, try to activate it again.
4. Back to warframe and use Merulina.

If you do it correctly you should get around 28k health on Merulina without Molt Augumented. If you'll stack up there will be more :)

You need good timing to activate it witch [Growing Power] still active or do step 3.5.

I don't know why but [Augur Reach] buff shows on site 120% Energy to shields but in reality is 160%. Also low efficiency with augur buff = more energy is converted into shields :)

OPTIONAL:
If you can't make it in time with boosting your abilities you can change [Augur Reach] for [Primed Continuity].

OPTIONAL 2:
If you want to Merulina shoot bubbles faster to stack your bubbles and Merulina's you can change [Augur Reach] for [Streamline] or anything with efficiency.

Feel free to comment if you have better idea for this kind of build :)