What your suggesting Booker is unfair one should be able to find a single mob without the need of a complex redstone signal which u advise against on the other side don't be lazy ask around it takes about 10-30 mins to find a ghast on a bad day so there is no need to raise anything happy gaming everyone
You know what, nevermind. I managed to get a single ghast tear and summoned a demon, which is now in my wall, so now I can buy hearts whenever I need them. I still will need tears occasionally for the regen potions, but I'll cross that bridge when I get to it.
Just thought I'd mention that you will find tears in RogueLike Dungeons, and you can (legitimately) duplicate them using Blood Magic.