Barristan, The Man-at-Arms

Frontline — When blocking, if the attacking
creature is blocked by two or more other creatures,
this creature must be assigned damage first.
As long as this creature is blocking, it has indestructible.
Barristan, The Man-at-Arms grants other attacking creatures you control +1/+0 and other blocking creatures you control +0/+1 as long as he is also attacking or blocking.
Partner (You can have two commanders if both
have partner.)