Volrath's Stronghold

{T}: Add {C}.
{1}{B}, {T}: Put target creature card from your graveyard on top of your library.

Gilded Drake

Flying
When Gilded Drake enters, exchange control of Gilded Drake and up to one target creature an opponent controls. If you don't or can't make an exchange, sacrifice Gilded Drake. This ability still resolves if its target becomes illegal.

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.

Treachery

Enchant creature
When Treachery enters, untap up to five lands.
You control enchanted creature.

Yavimaya Hollow

{T}: Add {C}.
{G}, {T}: Regenerate target creature.

Rofellos, Llanowar Emissary

{T}: Add {G} for each Forest you control.

Savannah

Lifeline

Whenever a creature dies, if another creature is on the battlefield, return the first card to the battlefield under its owner's control at the beginning of the next end step.

Replenish

Return all enchantment cards from your graveyard to the battlefield. (Auras with nothing to enchant remain in your graveyard.)

Great Whale

When Great Whale enters, untap up to seven lands.

Carnival of Souls

Whenever a creature enters, you lose 1 life and add {B}.

Intuition

Search your library for three cards and reveal them. Target opponent chooses one. Put that card into your hand and the rest into your graveyard. Then shuffle.