Promotion

Promotion or Eliting is one of the three ways to increase a character's Damage and Health, other than gaining levels or buying support cards.

You can promote a character with an extra copy of the card. This destroys the extra copy and causes it to go up an elite rank, but does not alter the character otherwise, including the level. It does not matter whether you level or promote a character first, they'll still arrive at the same maximum stats as dictated by their base stats.

Promotions can be done up to 7 times (8 cards in total). The elite rank of a card can be seen as a roman numeral in the top left corner. "III" means it's at the third elite rank; this goes up to VII. Fully promoted cards are often referred to as "EVII" or "E7", and this applies to other ranks as well. Cards that have never been promoted don't show anything in that corner, and are sometimes referred to as "E0", "normal" or "base".

A single promotion grants a 50% (of base stats) increase in both damage and health between normal and EII.

Trivia

 * Before Injustice 2.0, the maximum promotion a card could receive was 5, or "V".