Butcher Orgg

You may assign this creature's combat damage divided as you choose among defending player and/or any number of creatures they control.

Fellwar Stone

{T}: Add one mana of any color that a land an opponent controls could produce.

Thundermare

Haste (This creature can attack and {T} as soon as it comes under your control.)
When this creature enters, tap all other creatures.

Mountain

Bladewing the Risen

Flying
When Bladewing enters, you may return target Dragon permanent card from your graveyard to the battlefield.
{B}{R}: Dragon creatures get +1/+1 until end of turn.

Shivan Hellkite

Flying (This creature can't be blocked except by creatures with flying or reach.)
{1}{R}: This creature deals 1 damage to any target.

Ashen Firebeast

{1}{R}: This creature deals 1 damage to each creature without flying.

Darigaaz, the Igniter

Flying
Whenever Darigaaz deals combat damage to a player, you may pay {2}{R}. If you do, choose a color, then that player reveals their hand and Darigaaz deals damage to the player equal to the number of cards of that color revealed this way.

Gamble

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

Draco

Domain — This spell costs {2} less to cast for each basic land type among lands you control.
Flying
Domain — At the beginning of your upkeep, sacrifice this creature unless you pay {10}. This cost is reduced by {2} for each basic land type among lands you control.

Dragon Tyrant

Flying, trample
Double strike (This creature deals both first-strike and regular combat damage.)
At the beginning of your upkeep, sacrifice this creature unless you pay {R}{R}{R}{R}.
{R}: This creature gets +1/+0 until end of turn.

Covetous Dragon

Flying
When you control no artifacts, sacrifice this creature.

Bloodfire Colossus

{R}, Sacrifice this creature: It deals 6 damage to each creature and each player.

Pandemonium

Whenever a creature enters, that creature's controller may have it deal damage equal to its power to any target of their choice.

Dragon Mage

Flying
Whenever this creature deals combat damage to a player, each player discards their hand, then draws seven cards.

Colossus of Sardia

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
This creature doesn't untap during your untap step.
{9}: Untap this creature. Activate only during your upkeep.

Crosis, the Purger

Flying
Whenever Crosis deals combat damage to a player, you may pay {2}{B}. If you do, choose a color, then that player reveals their hand and discards all cards of that color.

Defense Grid

Each spell costs {3} more to cast except during its controller's turn.

Crater Hellion

Echo {4}{R}{R} (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 this creature enters, it deals 4 damage to each other creature.

Mind Stone

{T}: Add {C}.
{1}, {T}, Sacrifice this artifact: Draw a card.

Pyromancy

{3}, Discard a card at random: This enchantment deals damage to any target equal to the mana value of the discarded card.

Sneak Attack

{R}: You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice the creature at the beginning of the next end step.