Militech Berserk

Equipped creature gets trample and whenever it attacks, it get +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 each combat this turn,
untap equipped creatures you control. Only
equipped creatures can attack this turn.".
Equip {5}
Equip legendary creature {3}