Rampant Growth

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Have

Worldly Tutor

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

Jaheira's Respite

Search your library for up to X basic land cards, where X is the number of creatures attacking you, put those cards onto the battlefield tapped, then shuffle.
Prevent all combat damage that would be dealt this turn.

Explore

You may play an additional land this turn.
Draw a card.

Prime Speaker Vannifar

{T}, Sacrifice another creature: Search your library for a creature card with mana value equal to 1 plus the sacrificed creature's mana value, put that card onto the battlefield, then shuffle. Activate only as a sorcery.