Meekstone

Creatures with power 3 or greater don't untap during their controllers' untap steps.

Black Lotus

{T}, Sacrifice Black Lotus: Add three mana of any one color.

Pithing Needle

As Pithing Needle enters, choose a card name.
Activated abilities of sources with the chosen name can't be activated unless they're mana abilities.

Yavimaya, Cradle of Growth

Each land is a Forest in addition to its other land types.

Saproling Migration

Kicker {4} (You may pay an additional {4} as you cast this spell.)
Create two 1/1 green Saproling creature tokens. If this spell was kicked, create four of those tokens instead.

Thalia, Guardian of Thraben

First strike
Noncreature spells cost {1} more to cast.

The Tabernacle at Pendrell Vale

All creatures have "At the beginning of your upkeep, destroy this creature unless you pay {1}."