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 - $5.50
Near Mint Non-English - $5.50
Lightly Played - $5.25
Lightly Played Non-English - $5.25
Moderately Played - $4.50
Moderately Played Non-English - $4.50
Heavily Played - $3.50
Heavily Played Non-English - $3.50
Damaged - $2.75
Damaged Non-English - $2.75