mtg.wtf

{T}: Add {C}.
{1}: Mishra's Factory 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.

{T}: Add {C}.
{T}, Sacrifice Strip Mine: Destroy target land.

The next time a source of your choice would deal damage to you this turn, prevent that damage. You gain life equal to the damage prevented this way.

Destroy all lands.

Exile target creature. Its controller gains life equal to its power.

Destroy all creatures. They can't be regenerated.

Destroy all lands.

Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players discard cards and sacrifice creatures the same way.

At the beginning of your upkeep, target non-Wall creature an opponent controls gains forestwalk until your next upkeep.

Destroy target artifact. You gain life equal to its mana value.

{1}, {T}, Sacrifice Aeolipile: It deals 2 damage to any target.

Shroud
{G}: Until end of turn, Autumn Willow can be the target of spells and abilities controlled by target player as though it didn't have shroud.

Shroud
{G}: Until end of turn, Autumn Willow can be the target of spells and abilities controlled by target player as though it didn't have shroud.

Havenwood Battleground enters tapped.
{T}: Add {G}.
{T}, Sacrifice Havenwood Battleground: Add {G}{G}.

Whenever Spectral Bears attacks, if defending player controls no black nontoken permanents, it doesn't untap during your next untap step.

Ruins of Trokair enters tapped.
{T}: Add {W}.
{T}, Sacrifice Ruins of Trokair: Add {W}{W}.

Svyelunite Temple enters tapped.
{T}: Add {U}.
{T}, Sacrifice Svyelunite Temple: Add {U}{U}.

Counter target spell with mana value X.

Enchant artifact
You control enchanted artifact.