Mech Battalion

Vigilance, Reach
If any kind of knight is in play on your side, you may have them enter Mech battalion, Mech battalion gains +3/+3, if Mech battalion dies, put whatever knight you put in Mech battalion on the battlefield
All creatures in the battlefield on your side get 0/+2
When Mech Battalion dies, put two 6/6 Knight Battalions into the battlefield