Sedge Troll

This creature gets +1/+1 as long as you control a Swamp.
{B}: Regenerate this creature.

Dark Ritual

Terror

Destroy target nonartifact, nonblack creature. It can't be regenerated.

Nevinyrral's Disk

This artifact enters tapped.
{1}, {T}: Destroy all artifacts, creatures, and enchantments.

Mountain

Disintegrate

Disintegrate deals X damage to any target. If it's a creature, it can't be regenerated this turn, and if it would die this turn, exile it instead.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Maze of Ith

{T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

Hypnotic Specter

Flying
Whenever this creature deals damage to an opponent, that player discards a card at random.

Strip Mine

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

Swamp

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.

Sol Ring

Fireball

This spell costs {1} more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.

Sengir Vampire

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever a creature dealt damage by this creature this turn dies, put a +1/+1 counter on this creature.

Mind Twist

Target player discards X cards at random.

Sinkhole

Demonic Tutor

Search your library for a card, put that card into your hand, then shuffle.

City of Brass

Whenever this land becomes tapped, it deals 1 damage to you.
{T}: Add one mana of any color.