If you want to see more of sts visual lore, you can actually look up it's tv tropes and laugh along with some of them there.
judgment is like that one card made just for spheric guardian. If you get turn 1 or 2 judgment, the thing's dead before it can do anything else because what the card does is set its health to 0 without actually dealing damage. On the other hand, you can negate blasphemy death by being intangible. Say, if I have something like incense that very turn I draw blasphemy or somehow manage to cheat ghost in the jar in as a watcher (it's a silent only potion), or even wraith with store card or whatever, I'll not hesitate to use blasphemy that turn because it'll just do 1 damage without killing me. blasphemy deals 10001 or something damage to you. That's what it does. That's how you normally die from it.