Select 1 face-down monster you control. Your opponent declares 2 Attributes. Reveal the selected monster. If its Attribute is one of the declared Attributes, your opponent draws 2 cards. If not, you draw 2 cards.
edit: ok i got it,, both players should have at least 2 cards on deck
66% chance to draw 2 cards. Statistically better than Cup of Ace but requires a face down monster, and requires a turn to use since it's a trap. I generally prefer this over Cup of Ace, especially if your opponent doesn't know what kind of deck you're using.
cup of ace is enough, you wont want more than 3 of them, and it's a normal spell so you can use it in the first turn (the more important turn) this trap can be used if you draw a monster and have to wait the next turn to make it useful, better for mill deck