Equipped creature gets +1/+0 for each opponent you have. Whenever equipped creature is dealt damage, it deals that much damage to any target. Equip {4}

Equipped creature gets +2/+0 and has reach. Whenever equipped creature is dealt damage, it deals damage equal to its power to target player or planeswalker. Equip {2}{R}

Indestructible When Barbed Servitor enters the battlefield, suspect it. (It has menace and can't block.) Whenever Barbed Servitor deals combat damage to a player, you draw a card and you lose 1 life. Whenever Barbed Servitor is dealt damage, target opponent loses that much life.

Indestructible Whenever Brash Taunter is dealt damage, it deals that much damage to target opponent. {2}{R}, {T}: Brash Taunter fights another target creature.

Whenever Coalhauler Swine is dealt damage, it deals that much damage to each player.

Soulbond (You may pair this creature with another unpaired creature when either enters the battlefield. They remain paired for as long as you control both of them.) Whenever Donna or a creature it's paired with is dealt damage, Donna deals that much damage to target opponent. Doctor's companion (You can have two commanders if the other is the Doctor.)

Whenever Mogg Maniac is dealt damage, it deals that much damage to target opponent or planeswalker.

If a source you control would deal noncombat damage to an opponent or a permanent an opponent controls, it deals double that damage to that player or permanent instead. {1}{R/P}{R/P}, Discard two cards: Put an indestructible counter on Solphim, Mayhem Dominus. ({R/P} can be paid with either {R} or 2 life.)

Sliver creatures you control have "Whenever this creature is dealt damage, it deals that much damage to target player or planeswalker."

Indestructible As Stuffy Doll enters the battlefield, choose a player. Whenever Stuffy Doll is dealt damage, it deals that much damage to the chosen player. {T}: Stuffy Doll deals 1 damage to itself.

Trample When Themberchaud enters the battlefield, he deals X damage to each other creature without flying and each player, where X is the number of Mountains you control. You may exert Themberchaud as he attacks. When you do, he gains flying until end of turn. (An exerted creature won't untap during your next untap step.)

Volcano Hellion has echo {X}, where X is your life total. (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) When Volcano Hellion enters the battlefield, it deals an amount of damage of your choice to you and target creature. The damage can't be prevented.

Trample Whenever a Dinosaur you control is dealt damage, it deals that much damage to any target that isn't a Dinosaur.

Enchant creature Whenever enchanted creature is dealt damage, Binding Agony deals that much damage to that creature's controller.

Whenever a creature an opponent controls is dealt excess noncombat damage, amass Orcs X, where X is that excess damage. (Put X +1/+1 counters on an Army you control. It's also an Orc. If you don't control an Army, create a 0/0 black Orc Army creature token first.) {7}{R}: Fall of Cair Andros deals 7 damage to target creature.

Flash Enchant creature Whenever enchanted creature is dealt damage, its controller loses that much life.

When Spiteful Banditry enters the battlefield, it deals X damage to each creature. Whenever one or more creatures your opponents control die, you create a Treasure token. This ability triggers only once each turn.

Choose target creature. Whenever that creature is dealt damage this turn, it deals that much damage to each other creature and each player.

Sweep — Return any number of Mountains you control to their owner's hand. Barrel Down Sokenzan deals damage to target creature equal to twice the number of Mountains returned this way.

As an additional cost to cast this spell, pay X life. Fire Covenant deals X damage divided as you choose among any number of target creatures.

As an additional cost to cast this spell, exile X cards from your graveyard. Harvest Pyre deals X damage to target creature.

Impact Resonance deals X damage divided as you choose among any number of target creatures, where X is the greatest amount of damage dealt by a source to a permanent or player this turn.

Seismic Strike deals damage to target creature equal to the number of Mountains you control.

This spell costs {1} less to cast for each creature on the battlefield. Blasphemous Act deals 13 damage to each creature.

Chain Reaction deals X damage to each creature, where X is the number of creatures on the battlefield.

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

Hell to Pay deals X damage to target creature. Create a number of tapped Treasure tokens equal to the amount of excess damage dealt to that creature this way.

As an additional cost to cast this spell, return X Swamps you control to their owner's hand. Infernal Harvest deals X damage divided as you choose among any number of target creatures.

Choose one — • Disarm — Destroy target artifact. Create four Treasure tokens. • Detonate — Megaton's Fate deals 8 damage to each creature. Each player gets four rad counters.

Meteor Swarm deals 8 damage divided as you choose among X target creatures and/or planeswalkers.

Rockslide Ambush deals damage to target creature equal to the number of Mountains you control.

Rolling Earthquake deals X damage to each creature without horsemanship and each player.

Spitting Earth deals damage to target creature equal to the number of Mountains you control.

Destroy target land. Star of Extinction deals 20 damage to each creature and each planeswalker.

Subterranean Tremors deals X damage to each creature without flying. If X is 4 or more, destroy all artifacts. If X is 8 or more, create an 8/8 red Lizard creature token.