(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.
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overuses rule of cool
focusing too much on a single PC
too many different stat blocks in combat
afraid to tell players YES
underestimating the players
everything is a fetch quest
DMPC's, generally
overestimating the players
not sleeping before the session
doesn't read player backstories
afraid to tell players NO
making death meaningless
WAY too ambitious
abusing rule zero (DM always has final say)
over-prepping for the session
no plan for campaign end
way too much exposition
never writes ideas down
incoherent NPC motivations
excessive worldbuilding
overuse of time travel
doesn't vet the character sheets
the DM forgetting they're ALSO a player and their fun matters at the table too