If X is 5 or more, this spell can't be countered and the damage can't be prevented.
{R}
Bloodhall Ooze
Creature - Ooze
At the beginning of your upkeep, if you control a black permanent, you may put a +1/+1 counter on Bloodhall Ooze.
At the beginning of your upkeep, if you control a green permanent, you may put a +1/+1 counter on Bloodhall Ooze.
1 /
1
{2}{G}{G}
Bloodspore Thrinax
Creature - Lizard
Devour 1 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with that many +1/+1 counters on it.)
Each other creature you control enters the battlefield with an additional X +1/+1 counters on it, where X is the number of +1/+1 counters on Bloodspore Thrinax.
2 /
2
{1}{G}
Brindle Shoat
Creature - Boar
When Brindle Shoat dies, create a 3/3 green Boar creature token.
1 /
1
{3}{B}{R}{G}
Broodmate Dragon
Creature - Dragon
Flying
When Broodmate Dragon enters the battlefield, create a 4/4 red Dragon creature token with flying.
4 /
4
{4}{B}{R}{G}
Charnelhoard Wurm
Creature - Wurm
Trample
Whenever Charnelhoard Wurm deals damage to an opponent, you may return target card from your graveyard to your hand.
6 /
6
{3}{R}
Crucible of Fire
Enchantment
Dragon creatures you control get +3/+3.
{B}
Deathgreeter
Creature - Human Shaman
Whenever another creature dies, you may gain 1 life.
1 /
1
{3}{B}{R}{G}
Dragon Appeasement
Enchantment
Skip your draw step.
Whenever you sacrifice a creature, you may draw a card.
{2}{R}{R}{R}{G}
Dragon Broodmother
Creature - Dragon
Flying
At the beginning of each upkeep, create a 1/1 red and green Dragon creature token with flying and devour 2. (As the token enters the battlefield, you may sacrifice any number of creatures. It enters the battlefield with twice that many +1/+1 counters on it.)
4 /
4
{1}{R}
Dragon Fodder
Sorcery
Create two 1/1 red Goblin creature tokens.
{2}{R}{R}{G}{G}
Dragonlair Spider
Creature - Spider
Reach
Whenever an opponent casts a spell, create a 1/1 green Insect creature token.
5 /
6
{5}{R}
Fiery Fall
Instant
Fiery Fall deals 5 damage to target creature.
Basic landcycling {1}{R} ({1}{R}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)
{5}{R}
Fiery Fall
Instant
Fiery Fall deals 5 damage to target creature.
Basic landcycling {1}{R} ({1}{R}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)
{4}{R}{R}
Flameblast Dragon
Creature - Dragon
Flying
Whenever Flameblast Dragon attacks, you may pay {X}{R}. If you do, Flameblast Dragon deals X damage to any target.
5 /
5
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
{4}{R}{R}{R}
Form of the Dragon
Enchantment
At the beginning of your upkeep, Form of the Dragon deals 5 damage to any target.
At the beginning of each end step, your life total becomes 5.
Creatures without flying can't attack you.
{2}{R}
Goblin Assault
Enchantment
At the beginning of your upkeep, create a 1/1 red Goblin creature token with haste.
Goblin creatures attack each combat if able.
{2}{R}{G}
Hellkite Hatchling
Creature - Dragon
Devour 1 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with that many +1/+1 counters on it.)
Hellkite Hatchling has flying and trample if it devoured a creature.
2 /
2
{4}{B}{R}{R}{G}
Hellkite Overlord
Creature - Dragon
Flying, trample, haste
{R}: Hellkite Overlord gets +1/+0 until end of turn.
{B}{G}: Regenerate Hellkite Overlord.
8 /
8
{B}{R}{G}
Jund Charm
Instant
Choose one --
• Exile target player's graveyard.
• Jund Charm deals 2 damage to each creature.
• Put two +1/+1 counters on target creature.
--
Jund Panorama
Land
{T}: Add {C}.
{1}, {T}, Sacrifice Jund Panorama: Search your library for a basic Swamp, Mountain, or Forest card, put it onto the battlefield tapped, then shuffle.
--
Jund Panorama
Land
{T}: Add {C}.
{1}, {T}, Sacrifice Jund Panorama: Search your library for a basic Swamp, Mountain, or Forest card, put it onto the battlefield tapped, then shuffle.
{4}{B}{R}{G}
Karrthus, Tyrant of Jund
Legendary Creature - Dragon
Flying, haste
When Karrthus, Tyrant of Jund enters the battlefield, gain control of all Dragons, then untap all Dragons.
Other Dragon creatures you control have haste.
7 /
7
{2}{B}{R}{G}
Kresh the Bloodbraided
Legendary Creature - Human Warrior
Whenever another creature dies, you may put X +1/+1 counters on Kresh the Bloodbraided, where X is that creature's power.
3 /
3
{X}{B}{R}{G}
Lavalanche
Sorcery
Lavalanche deals X damage to target player or planeswalker and each creature that player or that planeswalker's controller controls.
{1}{B}{R}{G}
Madrush Cyclops
Creature - Cyclops Warrior
Creatures you control have haste.
3 /
4
{2}{B}{G}
Meren of Clan Nel Toth
Legendary Creature - Human Shaman
Whenever another creature you control dies, you get an experience counter.
At the beginning of your end step, choose target creature card in your graveyard. If that card's mana value is less than or equal to the number of experience counters you have, return it to the battlefield. Otherwise, put it into your hand.
3 /
4
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
{3}{G}{G}
Mycoloth
Creature - Fungus
Devour 2 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with twice that many +1/+1 counters on it.)
At the beginning of your upkeep, create a 1/1 green Saproling creature token for each +1/+1 counter on Mycoloth.
4 /
4
{3}
Obelisk of Jund
Artifact
{T}: Add {B}, {R}, or {G}.
{3}
Obelisk of Jund
Artifact
{T}: Add {B}, {R}, or {G}.
{3}{R}{R}{R}
Predator Dragon
Creature - Dragon
Flying, haste
Devour 2 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with twice that many +1/+1 counters on it.)
4 /
4
{3}{R}{G}
Predatory Advantage
Enchantment
At the beginning of each opponent's end step, if that player didn't cast a creature spell this turn, create a 2/2 green Lizard creature token.
{4}{R}{R}
Preyseizer Dragon
Creature - Dragon
Flying
Devour 2 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with twice that many +1/+1 counters on it.)
Whenever Preyseizer Dragon attacks, it deals damage to any target equal to the number of +1/+1 counters on Preyseizer Dragon.
4 /
4
{2}{R}{R}
Rakka Mar
Legendary Creature - Human Shaman
Haste
{R}, {T}: Create a 3/1 red Elemental creature token with haste.
2 /
2
{2}{R}{G}
Sarkhan Vol
Legendary Planeswalker - Sarkhan
+1: Creatures you control get +1/+1 and gain haste until end of turn.
-2: Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.
-6: Create five 4/4 red Dragon creature tokens with flying.
L:
4
--
Savage Lands
Land
Savage Lands enters the battlefield tapped.
{T}: Add {B}, {R}, or {G}.
--
Savage Lands
Land
Savage Lands enters the battlefield tapped.
{T}: Add {B}, {R}, or {G}.
--
Savage Lands
Land
Savage Lands enters the battlefield tapped.
{T}: Add {B}, {R}, or {G}.
--
Savage Lands
Land
Savage Lands enters the battlefield tapped.
{T}: Add {B}, {R}, or {G}.
{B}{R}{G}
Scarland Thrinax
Creature - Lizard
Sacrifice a creature: Put a +1/+1 counter on Scarland Thrinax.
2 /
2
{5}{B}{B}
Scourge of Nel Toth
Creature - Zombie Dragon
Flying
You may cast Scourge of Nel Toth from your graveyard by paying {B}{B} and sacrificing two creatures rather than paying its mana cost.
6 /
6
{2}{R}
Seething Song
Instant
Add {R}{R}{R}{R}{R}.
{B}{R}{G}
Sprouting Thrinax
Creature - Lizard
When Sprouting Thrinax dies, create three 1/1 green Saproling creature tokens.
3 /
3
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
{B}{R}
Terminate
Instant
Destroy target creature. It can't be regenerated.
{3}{R}{G}
Thromok the Insatiable
Legendary Creature - Hellion
Devour X, where X is the number of creatures devoured this way (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with X +1/+1 counters on it for each of those creatures.)
0 /
0
{G}
Tukatongue Thallid
Creature - Fungus
When Tukatongue Thallid dies, create a 1/1 green Saproling creature token.
1 /
1
{4}{R}{G}
Vengeful Rebirth
Sorcery
Return target card from your graveyard to your hand. If you return a nonland card to your hand this way, Vengeful Rebirth deals damage equal to that card's mana value to any target.