Illustrious Unknown Swordsman

Illustrious Unknown Swordsman gets +1/+1 for
each historic permanents you control
If you control more than 3 historic permanents,
this card have First Strike
Critical If oponnent have more than 10 life,
this card gain Double Strike if this card have First Strike when this cards enter the battlefield.
Otherwise , this card gets +1/+1 .