I've tested all possible combinations of Hatchling Rush (HR), Piercing Shot (PS), Shell Shocker (SS), and Sea King's Corruption SKC). SS + SKC can't be used since I can only use one aux core at a time; interestingly, I can't use PS + SS, even though I can use HR + SKC.
I tested against Valestra. Comparing her base heal (324) to the different combinations of heal reduction cores, my conclusion is that the heal reduction core used second always replaces the heal reduction of the first, regardless of the strength of the heal reduction of either core used. The defense reduction on PS and SS remain for their normal duration even if used first.
I also did some testing with Cyber Hunter's Neurotoxin, which reduces healing by 20%, and found some rather strange results. The heal reduction cores' effects do combine with Neurotoxin's, but the combination doesn't seem to be additive or multiplicative. For example, with Neurotoxin + SKC, Valestra healed for 159, which is about 49% of her base heal. If the combo was additive, I would expect a 35%-strength heal; if multiplicative, I would expect a 44%-strength heal. For every combination of heal cores + Neurotoxin, the actual heal was about 1.1x stronger than expected for a multiplicative effect. I would be interested to hear if anyone has a potential explanation.
< Message edited by CactusChan -- 5/23/2021 19:25:03 >