Equipped creature gets +2/+2 and has infect. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
Whenever Grafted Exoskeleton becomes unattached from a permanent, sacrifice that permanent.
NM-Mint - $9.40
Lightly Played - $8.90
Moderately Played - $8.50
Heavily Played - $7.50
Damaged - $6.10
NM-Mint Non English - $9.40
Lightly Played Non English - $8.90
Moderately Played Non English - $8.50
Heavily Played Non English - $7.50
Damaged Non English - $6.10