Demonspine Whip

Artifact — Equipment - (uncommon)

: Equipped creature gets +X/+0 until end of turn.
Equip 

Using a spine to break a slave's back appeals to the Grixis sense of irony.

Price

manapool 0.18

tcgplayer 0.21

cardmarket 0.14

cardkingdom 0.35

cardsphere 0.23