Eidolon of the Great Revel

Whenever a player casts a spell with converted mana cost 3 or less, Eidolon of the Great Revel deals 2 damage to that player.

Monastery Swiftspear

Haste Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Lava Spike

Lava Spike deals 3 damage to target player.

Flame Rift

Flame Rift deals 4 damage to each player.

Chain Lightning

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

Price of Progress

Price of Progress deals damage to each player equal to twice the number of nonbasic lands that player controls.

Volcanic Fallout

Sulfuric Vortex

At the beginning of each player's upkeep, Sulfuric Vortex deals 2 damage to that player. If a player would gain life, that player gains no life instead.

Rift Bolt

Rift Bolt deals 3 damage to target creature or player. Suspend 1—{R} (Rather than play this card from your hand, you may pay {R} and remove it from the game with a time counter on it. At the beginning of your upkeep, remove a time counter. When the last is removed, play it without paying its mana cost.)

Lightning Bolt

Lightning Bolt does 3 damage to one target.

Fireblast

You may sacrifice two mountains instead of paying Fireblast's casting cost. Fireblast deals 4 damage to target creature or player.

Goblin Guide

Haste Whenever Goblin Guide attacks, defending player reveals the top card of his or her library. If it's a land card, that player puts it into his or her hand.