Mountain

Earthquake

Earthquake deals X damage to each creature without flying and each player.

Ball Lightning

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Haste (This creature can attack and {T} as soon as it comes under your control.)
At the beginning of the end step, sacrifice Ball Lightning.

Island

Mox Ruby

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Mishra's Factory

{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.

Psionic Blast

Psionic Blast deals 4 damage to any target and 2 damage to you.

Chain Lightning

Chain Lightning deals 3 damage to any target. Then that player or that permanent's controller may pay {R}{R}. If the player does, they may copy this spell and may choose a new target for that copy.

Power Sink

Counter target spell unless its controller pays {X}. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.

Force Spike

Counter target spell unless its controller pays {1}.

Serendib Efreet

Flying
At the beginning of your upkeep, Serendib Efreet deals 1 damage to you.

Relic Barrier

Blood Moon

Volcanic Island

Howling Mine

At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.