Gather information

At the beginning of your precombat Mainphase
look at the top card of each players library.
You may reveal any number of those cards.
For each revealed land card create
a treasure token. For each creature
card create a 1/1 human creature token. For each artifact card investigate. For each
instant and sorcery draw a card.
Target opponent may do the same.
You draw a card for each different
card type revealed.