Thirst for Knowledge

Draw three cards. Then discard two cards unless you discard an artifact card.

Argivian Restoration

Return target artifact card from your graveyard to the battlefield.

Glory Seeker

Foil

You may discard an Island card and another card rather than pay this spell's mana cost.
Counter target spell.

Thoughtcast

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Draw two cards.

Darksteel Citadel

Mishra's Factory

{T}: Add {C}.
{1}: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

Seat of the Synod

Stalking Stones

{T}: Add {C}.
{6}: This land becomes a 3/3 Elemental artifact creature that's still a land. (This effect lasts indefinitely.)

Island

Kor Skyfisher

Flying
When this creature enters, return a permanent you control to its owner's hand.

Temple Acolyte

When this creature enters, you gain 3 life.

Duel Decks: Elspeth vs. Tezzeret