Got bored in math class so here's a survival game with 300+ items, 10+ bosses, and more to come in the future.
It is REALLY rare I used the rage stacking glitch to kill him an ungodly amount of times to get it. Also (I don't know if this is patched or not) if you break the cherry crafting table it will give you the lava heart.
theres also the rotted heart from the Frankenstein which gives i think +15 hp
its patched and that was my friend that found that out but i just got it