The main tournament will NOT be played for Ante; hence any cards that use the Ante mechanic arefrom being played.
Chaos Orb (2)
1, Tap: Choose a nontoken permanent on the battlefield. If Chaos Orb is on the battlefield, flip Chaos Orb onto the battlefield from a height of at least one foot. If Chaos Orb turns over completely at least once during the flip, and touches the chosen permanent, destroy that permanent. Then destroy Chaos Orb.