Errors in English Card Game

A deck of cards which can be used either as normal playing cards or as flashcards with two words (like "SHALL / WILL" or "ROBBERY / THEFT") on the face and an explanation of the difference in correct usage of the two words on the back. Instructions are included for a simple card game in which players race to play all cards from their hand, but can only play a card once they have described the point of English usage explained on it.