Jake, the Dog

{g}: Jake, the Dog gets +1/+0 until end of turn.
{u}: Jake, the Dog gets +0/+1 until end of turn.
{3}{g}{u}: You may have Jake, the Dog become a
copy of a target permanent, except its name is
Jake, the Dog, it's legendary in addition to its
other types, and it has Partner and this ability.
Partner (You can have two commanders if both have partner.)