I own an anarchy server, so many people use end crystals to fight. My friend got one shot by one of the crystals recently, so I'm wondering how much damage a crystal actually does. I've made recipes for protection 10 armor, and the full set (should) give 96% damage reduction (at least to my understanding, 20 armor points = 80% damage reduction, and protection 10 = 80% damage reduction, so stacking multiplicatively will give 96% damage reduction).
I will stand in a spot that lets me take 100% exposure.
How much damage will I take, and how many crystals do I need to get myself blown up?