This is my favorite development board now
For BlackIce Mx
I love this board. It so happened that currently I'm interested in ICE40 FPGAs and programming STM32 MCUs. Guess what, BlackIce II has both on a single board! Also if you do the match BlackIce II costs more or less the same as iCEstick + Nucleo-L433, but it's much more powerful (e.g. more LUTs and on-board SRAM) and also is much more convenient (lots of PMODs, Arduino-shields compatibility). To the best of my knowledge BlackIce II is the best development board in terms of price/quality.
Please note that Google finds some old articles when you search for BlackIce II docs. Actual docs and examples are on GitHub: https://github.com/mystorm-org/BlackIce-II
