Syr Gautier, the Stalwart

When Syr Gautier, the Stalwart enters the battlefield, create two 1/1 white Soldier creature tokens. If at least six white mana was spent to cast
Syr Gautier, the Stalwart, create four of those
tokens instead.
Whenever a Knight you control attacks alone, it
gets +X/+0 and first strike until end of turn,
where X is the number of creatures you control.