It is more likely to play 5 geist decks in a row, then 5 Ulu Watu decks in a row or alternating?
Or is it just random? Cuz sometimes...
The metagame shifts depending when you're playing.
Someone faces 4 Skeelz decks in a row, they're likely to drop their GHEIST decks and go for Ulu Watu or All-Stars, then people see that and start running GHEIST... etc.