Ichor
The Swift’s shimmering, rainbow-banded liquid. It’s harmless to the creatures that live here, but it burns visitors.
Ichor is a glowing, see-through block that shimmers in pastel bands of pink, violet, cyan, green and gold. It fills the basins of the Ichor Shallows and pools all over the Swift. It doesn’t flow like water: when you step in, you slow down and sink gently through it.
Burning
Ichor burns players. While you’re in it you catch fire, with blue soul flames, and take damage. Players in Creative are safe.
Mobs and ichor
Ichor never hurts mobs. Blubs love it: they seek it out, bathe in it and heal while they soak.
Forging the Spectral Spear
Throw a diamond spear into ichor. After 3 seconds it is forged into a Spectral Spear, and pops out of the ichor. This earns Tempered in Ichor.
Collecting it
Use an empty bucket on ichor to get a Bucket of Ichor, and use the bucket to pour it out again as an ichor block.