Whenever a Knight you control deals combat damage to a player, put a +1/+1 counter on a creature and create a Blood token. (It's an artifact with “{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.”)
Near Mint - $2.50
Lightly Played - $2.50
Moderately Played - $2.00
Heavily Played - $1.50
Damaged - $1.25
Near Mint Non-English - $2.50
Lightly Played Non-English - $2.50
Moderately Played Non-English - $2.00
Heavily Played Non-English - $1.50
Damaged Non-English - $1.25