For the Titan defenders that don't know this, when you use your ward of dawn it will reset your health to full so you shouldn't need to complain about being on red health when playing Crota on hard. This also means you don't need to worry about getting red death and armour that has health regeneration. SO STOP MOANING AND USE YOUR SUPER!
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It only heals yourself...I save mine for boomers/ogres. Why would I want to waste a bubble to heal myself if I have red death?