Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Mox Opal

Metalcraft — {T}: Add one mana of any color. Activate only if you control three or more artifacts.

{T}, Sacrifice Mishra's Bauble: Look at the top card of target player's library. Draw a card at the beginning of the next turn's upkeep.

Search your library for a creature card, reveal it, then shuffle and put the card on top.