Apocalypse Hydra enters the battlefield with X +1/+1 counters on it. If X is 5 or more, it enters the battlefield with an additional X +1/+1 counters on it.

{1}{R}, Remove a +1/+1 counter from Apocalypse Hydra: It deals 1 damage to any target.

{T}: Untap target Forest.

{T}: Add one mana of any color in your commander's color identity.

When Armorcraft Judge enters the battlefield, draw a card for each creature you control with a +1/+1 counter on it.

Reach, trample

Avatar of the Resolute enters the battlefield with a +1/+1 counter on it for each other creature you control with a +1/+1 counter on it.

When Bane of Progress enters the battlefield, destroy all artifacts and enchantments. Put a +1/+1 counter on Bane of Progress for each permanent destroyed this way.

Whenever you cast a creature spell, draw a card.

Flying

{T}: Add one mana of any color.

Castle Garenbrig enters the battlefield tapped unless you control a Forest.

{T}: Add {G}.

{2}{G}{G}, {T}: Add six {G}. Spend this mana only to cast creature spells or activate abilities of creatures.

({T}: Add {R} or {G}.)

Cinder Glade enters the battlefield tapped unless you control two or more basic lands.

{X}, {T}: Search your library for a creature card with mana value X or less, reveal it, put it into your hand, then shuffle.

{T}: Add one mana of any color in your commander's color identity.

Prevent all combat damage that would be dealt to attacking creatures you control.

{X}{G}{G}{G}: Monstrosity X. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.)

As long as Domesticated Hydra is monstrous, it has trample.

+1: Look at the top card of your library. If it's a creature card, you may reveal it and put it into your hand.

-2: Target creature you control fights another target creature.

-7: You get an emblem with "Creatures you control have double strike, trample, hexproof, and haste."

Creatures you control get +1/+0.

+1: Add {R} or {G}. Creature spells you cast this turn can't be countered.

-2: Target creature you control fights target creature you don't control.

+1: Add {R} or {G}. If that mana is spent on a creature spell, it gains riot. (It enters the battlefield with your choice of a +1/+1 counter or haste.)

-3: Look at the top four cards of your library. You may reveal up to two creature cards from among them and put them into your hand. Put the rest on the bottom of your library in a random order.

-8: You get an emblem with "At the beginning of each end step, create a 4/4 red and green Beast creature token with trample."

(Dryad Arbor isn't a spell, it's affected by summoning sickness, and it has "{T}: Add {G}.")

Whenever a creature with power 3 or greater enters the battlefield under your control, draw a card.

{T}: Add {G}.

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Feral Hydra enters the battlefield with X +1/+1 counters on it.

{3}: Put a +1/+1 counter on Feral Hydra. Any player may activate this ability.

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

{T}: Add {G}.

Vigilance

Hydra spells you cast cost {4} less to cast.

Whenever a creature you control becomes the target of a spell, Gargos, Vicious Watcher fights up to one target creature you don't control.

Whenever another creature with power 3 or greater enters the battlefield under your control, you may draw a card.

Create X X/X green Ooze creature tokens.

Search your library for a green creature card with mana value X or less, put it onto the battlefield, then shuffle. Shuffle Green Sun's Zenith into its owner's library.

{1}, {T}: Add {R}{G}.

Whenever a nontoken creature enters the battlefield under your control, if it doesn't have the same name as another creature you control or a creature card in your graveyard, draw a card.

If one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on it instead.

Heaven deals X damage to each creature with flying.

---

Aftermath (Cast this spell only from your graveyard. Then exile it.)

Earth deals X damage to each creature without flying.

Hooded Hydra enters the battlefield with X +1/+1 counters on it.

When Hooded Hydra dies, create a 1/1 green Snake creature token for each +1/+1 counter on it.

Morph {3}{G}{G}

As Hooded Hydra is turned face up, put five +1/+1 counters on it.

Hungering Hydra enters the battlefield with X +1/+1 counters on it.

Hungering Hydra can't be blocked by more than one creature.

Whenever Hungering Hydra is dealt damage, put that many +1/+1 counters on it. (It must survive the damage to get the counters.)

Draw a card for each creature you control with a +1/+1 counter on it. Those creatures gain indestructible until end of turn. (Damage and effects that say "destroy" don't destroy them.)

Ivy Elemental enters the battlefield with X +1/+1 counters on it.

Trample

Kalonian Hydra enters the battlefield with four +1/+1 counters on it.

Whenever Kalonian Hydra attacks, double the number of +1/+1 counters on each creature you control.

{T}: Add {C}.

{4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

{T}: Add {C}.

{X}{R}{G}, {T}: Target creature gets +X/+0 and gains trample until end of turn.

Trample

Lifeblood Hydra enters the battlefield with X +1/+1 counters on it.

When Lifeblood Hydra dies, you gain life and draw cards equal to its power.

At the beginning of your upkeep, scry 1.

Whenever you cast a creature spell, you may pay {G}. If you do, draw a card.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)

Equip {0}

{T}: Add {G}.

This spell can't be countered.

Haste, protection from blue

Mistcutter Hydra enters the battlefield with X +1/+1 counters on it.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

Destroy target artifact or enchantment with mana value 3 or less.

Destroy target artifact or enchantment. Its controller gains 4 life.

Attacking creatures you control have deathtouch.

Whenever a creature you control deals combat damage to a player, draw a card.

Enchant land

Whenever enchanted land is tapped for mana, its controller adds an additional {G}{G}.

{X}{X}{G}: Monstrosity X. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.)

When Polukranos, World Eater becomes monstrous, it deals X damage divided as you choose among any number of target creatures your opponents control. Each of those creatures deals damage equal to its power to Polukranos.

Indestructible

Whenever Predator Ooze attacks, put a +1/+1 counter on it.

Whenever a creature dealt damage by Predator Ooze this turn dies, put a +1/+1 counter on Predator Ooze.

Primordial Hydra enters the battlefield with X +1/+1 counters on it.

At the beginning of your upkeep, double the number of +1/+1 counters on Primordial Hydra.

Primordial Hydra has trample as long as it has ten or more +1/+1 counters on it.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Enchant creature

Enchanted creature gets +2/+0 and has trample.

When Rancor is put into a graveyard from the battlefield, return Rancor to its owner's hand.

Creature spells you control can't be countered.

Nontoken creatures you control have riot. (They enter the battlefield with your choice of a +1/+1 counter or haste.)

{T}: Add {C}.

{4}, {T}: Target creature can't be blocked this turn.

Rootbound Crag enters the battlefield tapped unless you control a Mountain or a Forest.

{T}: Add {R} or {G}.

{T}: Add {C}{C}{C}{C}. Spend this mana only on costs that contain {X}.

Sacrifice Sakura-Tribe Elder: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Savage Twister deals X damage to each creature.

Double strike

Savageborn Hydra enters the battlefield with X +1/+1 counters on it.

{1}{R/G}: Put a +1/+1 counter on Savageborn Hydra. Activate only as a sorcery.

({T}: Add {R} or {G}.)

Sheltered Thicket enters the battlefield tapped.

Cycling {2} ({2}, Discard this card: Draw a card.)

{T}: Add {C}.

{R}{G}, {T}: Target creature gets +1/+1 and gains trample until end of turn.

Strive -- This spell costs {1}{G} more to cast for each target beyond the first.

Choose any number of target creatures. Double the number of +1/+1 counters on each of them.

Steelbane Hydra enters the battlefield with X +1/+1 counters on it.

{2}{G}, Remove a +1/+1 counter from Steelbane Hydra: Destroy target artifact or enchantment.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)

Equip {1}

{T}: Add {C}.

{T}: Add {R} or {G}. Talisman of Impulse deals 1 damage to you.

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

This spell costs {X} less to cast, where X is the greatest power among creatures you control.

{T}: Add {G}{G}. You gain 2 life.

Whenever a nontoken creature enters the battlefield under your control, put a +1/+1 counter on it and draw a card.

Players can't activate planeswalkers' loyalty abilities.

At the beginning of your draw step, draw an additional card.

Spells you cast cost {1} less to cast.

Creatures you control get +1/+1.

Equipped creature has nonbasic landwalk. (It can't be blocked as long as defending player controls a nonbasic land.)

Equip {2}

Whenever you cast a permanent spell with a mana cost that contains {X}, double the value of X.

Whenever you cast an instant or sorcery spell or activate an ability, if that spell's mana cost or that ability's activation cost contains {X}, copy that spell or ability. You may choose new targets for the copy.

Enchant Forest

As Utopia Sprawl enters the battlefield, choose a color.

Whenever enchanted Forest is tapped for mana, its controller adds an additional one mana of the chosen color.

Vastwood Hydra enters the battlefield with X +1/+1 counters on it.

When Vastwood Hydra dies, you may distribute a number of +1/+1 counters equal to the number of +1/+1 counters on Vastwood Hydra among any number of creatures you control.

Trample

Voracious Hydra enters the battlefield with X +1/+1 counters on it.

When Voracious Hydra enters the battlefield, choose one --

• Double the number of +1/+1 counters on Voracious Hydra.

• Voracious Hydra fights target creature you don't control.

Reach

When Whiptongue Hydra enters the battlefield, destroy all creatures with flying. Put a +1/+1 counter on Whiptongue Hydra for each creature destroyed this way.

Equipped creature can't be blocked and has shroud. (It can't be the target of spells or abilities.)

Equip {2}

Search your library for a creature card, reveal it, then shuffle and put the card on top.

+1: Add X mana in any combination of {R} and/or {G}, where X is the number of creatures you control.

0: Create a 2/2 red and green Satyr creature token with haste.

-6: Exile the top seven cards of your library. You may put any number of creature and/or land cards from among them onto the battlefield.