Flowstone
The fluxionist's building stone: its bricks go into Confluence plinths and columns and the walls of a Flux Forge, and a circle of currents is drawn on its slab. Wake it with any current shard set among eight stones on a crafting table — thin veins of current run through it; in the Flowstone Grottoes it lies by itself on the cave floors.
kindblockcreative tabFluxion: Decor
Currents
Strata2What the Loupe reads: 2 in all. The game works them out from its recipes. Wheel of Currents
In the Codex
Entry 
Flux Forge — A kiln three blocks to a side that burns flux instead of coal. Read the air of the Nether — in any of its valleys.