I was thinking about having tourneys based off film series. That is, for each film in a series, you need to have X element cards. After every game, you move on to the next film in the series (or maybe not the last part). The 2 examples I thought of were Harry Potter and James Bond
Harry Potter
Philosopher's stone - must have X
cards
Chamber of secrets -
Prisoner of Azkaban -
Goblet of Fire - must have X
cards
Order of the phoenix -
Half blood prince -
deathly hallows - must have X
cards
X can be any number which is deemed fit. Not sure on all of them.
James Bond
Thunderball - Must have 6 Ball Lightnings
Golden Eye - Must have 6 Precogs
Octopussy - Must have 6 squids (maybe not because rares)
Moonraker - Must have 6 eclipse
Skyfall - Must have 6 sky blitz
Die another day - Must have 6 miracles (maybe not because rares and OP)
I can't remember all 23 bond films right now but tis just an idea.