It's mostly no problem if it's removed. It can potentially lead to bowel obstructions. This is not because the appendix is missing, but because intrusive surgeries in which the bowels are handled can cause obstructions.
Regrowth might work, although with the percentage of cards in this deck that are permanents, it's likely a dead card if you draw it early game and don't get hit by removal...
What white creatures did you have in mind? Something like Monk Idealist?
"Their" is plural. "Their" is plural. "Their" is plural." "Their" is plural. "Their" is plural. "Their" is plural." "Their" is plural. "Their" is plural. "Their" is plural."
"Each opponent" is singular. "Each opponent" is singular. "Each opponent" is singular. "Each opponent" is singular. "Each...
I've had to mull over this one for a while. It coincided completely with what I have observed. I've even known people who overtly embody this concept. And yet I never really noticed it until I saw it in writing. That is frustrating. But I understand now what you mean.
People don't just "forget"...