Atlas Gauntlets

Equip {3}
Powered 1 (this artifact become powered when
1 hexpower counter is put on it)
Equipped creature get +2/+0 and trample.
If Atlas Gauntlets are powered, equipped
creature get instead +4/+0, trample and "when
this creature fight 2 or more creatures, reduce
the toughness of one of them up to 1".