Conduit Power

How it works

Water	All 27 spaces of the 3 x 3 x 3 cube centered on the Conduit, including its own space, must hold water. Waterlogged blocks count.
Frame blocks	Prismarine, Prismarine Bricks, Dark Prismarine and Sea Lantern. They can be mixed.
Frame shape	Frame blocks only count in 42 places: the outer ring of a 5 x 5 square in each of the three flat planes through the Conduit (one horizontal, two vertical). Each ring has 16 places and the rings share 6.
Activation	At least 16 frame blocks in those places. The Conduit checks its frame every 2 seconds.
Range	16 blocks for every full 7 frame blocks, measured as a sphere from the Conduit: 32 blocks at 16 frame blocks, up to 96 blocks at 42.
Effect	Conduit Power I for 13 seconds, given again every 2 seconds to each player in range who is in water or standing in rain. Only players get the effect. Its particles are the faint ambient kind.
Attack	Needs all 42 frame blocks. Every 2 seconds the Conduit deals 4 damage (2 hearts) of magic damage to one hostile mob.
Attack target	A random hostile mob that is in water or rain, within 8 blocks of the Conduit in every direction. It keeps attacking the same mob until it dies or moves 8 or more blocks away, then picks a new one.