How to Play 99 Heroes (Rules School)

About 99 Heroes, from BoardGameGeek:

Part collector's item and part multiplayer dueling game, 99 Heroes combines the beauty of collecting with the joy of executing awesome card combos. 99 Heroes packs contain giant linen finish cards with gold foiling. These cards feature beautiful art from your favorite Level 99 Games. You can use these cards to create a team of heroes and duel one, two, or even four of your friends during a game night! All you need are some heroes and playing cards! -description from the publisher