Thespian's Stage

{T}: Add {C}.
{2}, {T}: This land becomes a copy of target land, except it has this ability.

Urza's Saga

Construct

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — This Saga gains "{T}: Add {C}."
II — This Saga gains "{2}, {T}: Create a 0/0 colorless Construct artifact creature token with 'This token gets +1/+1 for each artifact you control.'"
III — Search your library for an artifact card with mana cost {0} or {1}, put it onto the battlefield, then shuffle.

Wasteland

{T}: Add {C}.
{T}, Sacrifice this land: Destroy target nonbasic land.

Snow-Covered Plains

Snow-Covered Island

Snow-Covered Swamp

Snow-Covered Mountain

Iona, Shield of Emeria

Flying
As Iona enters, choose a color.
Your opponents can't cast spells of the chosen color.

Snow-Covered Forest

Snow-Covered Wastes

Future Sight

Play with the top card of your library revealed.
You may play lands and cast spells from the top of your library.

Hoodwink

Return target artifact, enchantment, or land to its owner's hand.

Hullbreacher

Treasure

Flash
If an opponent would draw a card except the first one they draw in each of their draw steps, instead you create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Lifetap

Whenever a Forest an opponent controls becomes tapped, you gain 1 life.

Contagion

You may pay 1 life and exile a black card from your hand rather than pay this spell's mana cost.
Distribute two -2/-1 counters among one or two target creatures.

Dakmor Sorceress

Dakmor Sorceress's power is equal to the number of Swamps you control.

Mystery Booster 2