Top Trumps is a card game where each character gets assigned certain values for different characteristics, like age or magical power or strength or whatever, and you have to select a card you think will win in a particular category so people can try andb eat you with a stronger card. So you could say 'Gaius, most wrinkly-faced' and somebody could try to counter with fake!Old Merlin, and whoever has the highest value on their card wins.