Er muss 2 abwerfen.
2. Q: I put Grafted Wargear on my animated Blinkmoth Nexus. When my Nexus stops being a creature and the Wargear falls off, must I sacrifice the Nexus?
A: Yes. Becoming unattached due to a State-Based Effect is still becoming unattached, and will trigger the ability. When Grafted Wargear says "...sacrifice that creature" what it really means is "...sacrifice whatever permanent it just became unattached from.