Thalgrum the Doomed

Cursed Item?—When attaching an Equipment to
Thalgrum the Doomed, roll a d20.
1: Add three -1/-1 counters to Thalgrum the
Doomed.
2-10: Add two -1/-1 counters to Thalgrum the
Doomed.
11-19: Replace one -1/-1 counter on Thalgrum
the Doomed with a +1/+1 counter.
20: Replace each -1/-1 counter on Thalgrum the
Doomed with a +1/+1 counter.