I would like to identify the name of a certain gameplay mechanism. It is fairly commonly seen but probably best illustrated with card games:
A game played with a pack of cards usually has card values ordered in the following way: A>K>Q>J>10>9>8>7>6>5>4>3>2.
Sometimes the lowest-ranked card (in this case 2) is specially ruled to trump the highest-ranked card (in this case A), is there a proper name for such a mechanism?