You'll still mill cards equal to the number of rad counters you have, and you'll still remove a rad counter from yourself for each nonland card you milled, but instead of losing life, you'll gain 1 life for each nonland card you milled
Being able to EoT kill their plays is mostly nice for mana saving and for late game targets mana saving isn't a big deal
As a completely new resource in a Standard-legal set, its understandable that R&D didnt want to go too hard and print a ton of synergy and overpowered cards
Ungraded & graded values for all MTG CN2 Magic Cards
Ichor Wellspring ain't no proper egg in that sense (it has no built-in sacrifice ability), but assuming your deck hangs out with an entourage like Braids, Arisen Nightmare or Daretti, Scrap Savant and you can reanimate artifacts, you can draw a lot of omelets with this one