Talk:Rejuvenation/@comment-25680547-20160329082702/@comment-7645613-20160329084849

Corrosive projection is no doubt more effective in a group against heavily armored grineer, but Energy Siphon is subjective in a way. I can think of very few abilities that drain so much energy to require less than 1 energy a second to make more of a difference then a team energy restore.

By my subjective experience, Rejuvenation is more effective then corrosive projection and energy siphon up to about level 60 grineer depending heavily on your weapon choices and whether they can punch through armor easily or using warframes that don't constantly use abilities. After that, corrosive projection becomes more useful since enemies will often cause more damage in a shorter time making the regain less effective as well as power usage may often increase.