Wording probably isn't correct now but it was confusing before "When ~ ETBs tapped creatures get -1/-1 UEOT." made it look like Corrupting Assailant needed to EBT tapped so that all creatures get -1/-1 UEOT.
I was going to make this so that Antiworld Endoarmory dealt damage to you instead of paying life, but that didn't look like it worked (and if it did was much too wordy).
Yeah, the comma just looks really ugly there.
When ~ ETBs, each tapped creature gets -1/-1 UEOT.
Wording probably isn't correct now but it was confusing before "When ~ ETBs tapped creatures get -1/-1 UEOT." made it look like Corrupting Assailant needed to EBT tapped so that all creatures get -1/-1 UEOT.
I was going to make this so that Antiworld Endoarmory dealt damage to you instead of paying life, but that didn't look like it worked (and if it did was much too wordy).