Whenever a Knight you control deals combat damage to a player, put a +1/+1 counter on that creature and create a Blood token. (It's an artifact with “{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.”)
NM-Mint - $3.20
Lightly Played - $3.00
Moderately Played - $2.80
Heavily Played - $2.50
Damaged - $2.10
NM-Mint Non English - $3.20
Lightly Played Non English - $3.00
Moderately Played Non English - $2.80
Heavily Played Non English - $2.50
Damaged Non English - $2.10