Equipped creature gets +1/+1 for each color among permanents you control.
As long as Conqueror's Flail is attached to a creature, your opponents can't cast spells during your turn.
Equip {2}
Near Mint - $6.50
Near Mint Non-English - $6.50
Lightly Played - $6.25
Lightly Played Non-English - $6.25
Moderately Played - $5.25
Moderately Played Non-English - $5.25
Heavily Played - $4.00
Heavily Played Non-English - $4.00
Damaged - $3.25
Damaged Non-English - $3.25