Drakkar, turncoat leader

{b}{b}{b},{t}:Create 3/3 human token.
When this creature attack, create 2/2 giak token.
If you control two Human soldiers, this card gets
+1/+0 and Vigilance.
If you control three Human soldiers,this card gets
+1/+1 and Vigilance.
If you control four Human soldiers,this card gets
+2/+1 and Vigilance.
If you control five or more Human soldiers,this
card gets +2/+2 and Vigilance and Double strike.