Worldly Tutor

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

Academy Rector

When Academy Rector dies, you may exile it. If you do, search your library for an enchantment card, put that card onto the battlefield, then shuffle.

Green Sun's Zenith

Search your library for a green creature card with mana value X or less, put it onto the battlefield, then shuffle. Shuffle Green Sun's Zenith into its owner's library.

Burgeoning

Whenever an opponent plays a land, you may put a land card from your hand onto the battlefield.