Dr. Jekyll, Mr. Hyde's Keeper

If a player would draw a card, that player exiles
the top card of one of their opponents' libraries
face down instead.
Each player may look at cards they exiled with
Dr. Jekyll, Mr. Hyde's Keeper, and they may play
lands and cast spells from among those cards.
Nonbasic landwalk (This creature can't be
blocked as long as defending player controls
a nonbasic land.)