Militech Berserk

Equipped creature gets trample and whenever it
attacks, it gets +1/+0 for each creature defending
player controls. It also gets "{5}{r}{r}, exile Militech
Berserk : for each equipped creature you control,
after this phase, there is an additionnal combat
phase. At the beginning of combat this turn,
untap each equipped creature you control. Only
equipped creatures can attack this turn."
Equip {5}
Equip legendary creature {3}