You may look at the top card of your library any time.
Would You Like A ... ? — Once each turn, you may play a historic land or cast a historic spell from the top of your library. When you do, create a Food token (A Food is an artifact with ", , Sacrifice this artifact: You gain 3 life."). (Artifacts, legendaries, and Sagas are historic.)
Vintage
Modern
, 
, Sacrifice this artifact: You gain 3 life.")
