As mentioned in the title, this deck's strength is that of endurance:
10x gravity pillar
1-2x gravity shield
1x arsenic (if you have one)
Strategy: this is not an offensive deck. essentially, your goal is to poison the enemy while using armagios to take the brunt of the opposing attacks
use plague and gravity pull to put down anything with heavy firepower (ex. dragons, shriekers, phase recluses, etc.) and use gravity shield to prevent anything big from getting through.
Weaknesses: being a slow, enduring deck, it dies easily against FFQ decks, and fast moving rainbow decks, and rush decks.