Crown of Doom 55 (Commander 2014)

Whenever a creature attacks you or a planeswalker you control, it gets +2/+0 until end of turn. {2}: Target player other than this artifact's owner gains control of it. Activate only during your turn.

NM - $7.90
LP - $6.30
MP - $4.80
HP - $3.20
DMG - $1.60