The wording of the card is important. Ichor is a word not often used in MTG, but 4 of the 5 previous times have been in reference to Phyrexia (specifically, New Phyrexia). I'm sure Wizards did this deliberately, as they could have easily called it Fountain of Oil or Fountain of Tar and used slightly different flavor text.
I would hope that they would have learned by now from other foreshadowing and red-herring flops that showing us black, oily goop with that specific aesthetic and sinister flavortext wording as a misdirect or "joke" will play pretty poorly to a lot of people.
they couldve called it many other things and not invoke phyrexians.
All of them look interesting and playable. Smiting Helix is going to become a staple in Mardu commander decks.
I don't know about becoming a staple. Four mana is a big ask, considering how many things three damage doesn't kill. You're in the three colors best at killing creatures, so Smiting Helix will see some extremely stiff competition to make it into decks, even considering the fact that you can use it twice.
I think being a sorcery also hurts it. I dont think it will get much attention in EDH
I'm seriously curious about why this needed to be conditional to not put there this combat? Is there some sort of loop of extra combats I'm missing? Hmmm maybe to just avoid confusion about whether you could normally target a creature that died in combat? Which double checking it definitely looks like you can. Oh I see, with trample raise deading itself might be a little much, swing, trade a creature and get him back from his own ability would be pretty strong.
Pretty sure that self recursion isn't the reason because the way it's worded you can loop a second copy just fine.
Seems like flat was talking about recurring ONE card over and over. A 1 card recursion engine is way different from a 2-card engine.