Black Luster Soldier

Instead of paying Black Luster Soldier's mana cost,
you may sacrifice creatures whose combined mana
cost is equal to or greater than {8}.
If you control four or more Knights, then Black
Luster Soldier gains Menace. If you control six
or more, then Black Luster Soldier also gains Intimidate. If you control eight or more, then
Black Luster Soldier gains Annihilator 2.
The only knight dragons fear.