Brigbor's Onslaught

Put a legendary warrior creature from your hand or command zone onto the battlefield.
Creatures you control that share a creature type with that creature gets +3/+3 and has haste, first strike and trample until end of turn, those creatures attack this turn if able.
"They thought they had dealt with me for the last time? HA! i may keep their lords as entertainers when i have taken their lands cause i'll be laughing." - Brigbor