Might Makes Right
About this card
Might Makes Right is an enchantment card in Magic: The Gathering with mana value 6 (color identity: red). Printed in Magic 2015 (2014). Legal in Commander, Pioneer, Modern, Legacy and Vintage. Cardmarket price: €0.06.
Might Makes Right 

An oath of fealty sworn with a handshake.
Name in each language
Legality
Rulings
2014-07-18
“Each creature on the battlefield with the greatest power” may be a single creature if each other creature has less power.
2014-07-18
The ability will trigger only if you control each creature on the battlefield with the greatest power as the beginning of combat step begins. If another player controls a creature with the greatest power or tied for the greatest power at that time, the ability won’t trigger at all.
2014-07-18
The ability will check its condition again as it tries to resolve. If, at that time, another player controls a creature with the greatest power or tied for the greatest power, the ability won’t do anything.
2014-07-18
The ability can target any creature an opponent controls, not just one that’s tapped.
2014-07-18
Gaining control of a creature doesn’t cause you to gain control of any Auras or Equipment attached to it.