「」「」
"I want to play cards." "Me too."
Literal
"Cards-do-want [feeling-なあ]" "Me [also-も]"
トランプ ('toranpu') is the loanword for playing cards, from English 'trumps' — not 'trump' as in the card game or political figure. トランプする is a する verb meaning 'to play cards.' なあ adds a wistful, daydreaming feel. 私も ('me too') with just the particle and no predicate is extremely common in casual reply.