DumpItemData by Okkapel683
/dumpitemdata to print info about the held item to the server log. /dumpblockdata for blocks: run the command and right-click on the block.
Mystcraft Exacting Research by theorbtwo
This mod attempts to add two things to your mystcraft experince: symbols to let you more exactly specify the attributes of your age, and devices to allow you to get symbols via careful research, rather then by luck