Grafted Wargear 
Artifact — Equipment
Equipped creature gets +3/+2.
Whenever this Equipment becomes unattached from a permanent, sacrifice that permanent.
Equip {0} ({0}: Attach to target creature you control. Equip only as a sorcery.)
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Cards that do something similar expected a card that isn't here?
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Stitcher's Graft 100%
$0.16#21515
"Whenever this Equipment becomes unattached from a permanent, sacrifice that permanent."
+2 more matching lines
Grafted Exoskeleton 100%
#2270
"Whenever this Equipment becomes unattached from a permanent, sacrifice that permanent."
+1 more matching line