Capricopian enters the battlefield with X +1/+1 counters on it. {2}: Put a +1/+1 counter on Capricopian, then you may reselect which player Capricopian is attacking. Only the player Capricopian is attacking may activate this ability and only during the declare attackers step. (It can't attack its controller.)

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

Endless One enters the battlefield with X +1/+1 counters on it.

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.

Grakmaw, Skyclave Ravager enters the battlefield with three +1/+1 counters on it. Whenever another creature you control dies, if it had a +1/+1 counter on it, put a +1/+1 counter on Grakmaw. When Grakmaw dies, create an X/X black and green Hydra creature token, where X is the number of +1/+1 counters on Grakmaw.

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.

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.)

Put a +1/+1 counter on target creature you control, then double the number of +1/+1 counters on that creature.

Trample Whenever a player casts a spell, put a +1/+1 counter on Managorger Hydra.

{1}{G}{U}: Put a +1/+1 counter on target creature you control. Whenever one or more +1/+1 counters are put on a creature you control, put that many growth counters on Simic Ascendancy. At the beginning of your upkeep, if Simic Ascendancy has twenty or more growth counters on it, you win the game.

Counter target noncreature spell unless its controller pays {2}.

Reach, trample, protection from multicolored Stonecoil Serpent enters the battlefield with X +1/+1 counters on it.

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 Domain — Whenever Briar Hydra deals combat damage to a player, put X +1/+1 counters on target creature you control, where X is the number of basic land types among lands you control.

Vigilance, trample, haste Goldvein Hydra enters the battlefield with X +1/+1 counters on it. When Goldvein Hydra dies, create a number of tapped Treasure tokens equal to its power.

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

When Garruk's Uprising enters the battlefield, if you control a creature with power 4 or greater, draw a card. Creatures you control have trample. (They can deal excess combat damage to the player or planeswalker they're attacking.) Whenever a creature with power 4 or greater enters the battlefield under your control, draw a card.

When you cast this spell, reveal the top X cards of your library. You may put a nonland permanent card with mana value X or less from among them onto the battlefield. Then shuffle the rest into your library. Genesis Hydra enters the battlefield with X +1/+1 counters on it.

Reveal the top X plus one cards of your library. Choose a creature card and/or a land card from among them. Put those cards into your hand and the rest on the bottom of your library in a random order. If X is 5 or more, instead put the chosen cards onto the battlefield or into your hand and the rest on the bottom of your library in a random order.

{T}, Sacrifice Mishra's Bauble: Look at the top card of target player's library. Draw a card at the beginning of the next turn's upkeep.

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

{T}: Add {C}. {3}{G}, {T}, Sacrifice Blighted Woodland: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

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

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

({T}: Add {G}.)

Gemstone Mine enters the battlefield with three mining counters on it. {T}, Remove a mining counter from Gemstone Mine: Add one mana of any color. If there are no mining counters on Gemstone Mine, sacrifice it.

({T}: Add {U} or {B}.) Ice Tunnel enters the battlefield tapped.

({T}: Add {U}.)

Jungle Hollow enters the battlefield tapped. When Jungle Hollow enters the battlefield, you gain 1 life. {T}: Add {B} or {G}.

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

Krosan Verge enters the battlefield tapped. {T}: Add {C}. {2}, {T}, Sacrifice Krosan Verge: Search your library for a Forest card and a Plains card, put them onto the battlefield tapped, then shuffle.

Path of Ancestry enters the battlefield tapped. {T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Skyline Cascade enters the battlefield tapped. When Skyline Cascade enters the battlefield, target creature an opponent controls doesn't untap during its controller's next untap step. {T}: Add {U}.

({T}: Add {B}.)

Put a +1/+1 counter on target creature you control. It gains reach, trample, hexproof, and indestructible until end of turn. (It can't be the target of spells or abilities your opponents control. Damage and effects that say "destroy" don't destroy it.)

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

Arixmethes, Slumbering Isle enters the battlefield tapped with five slumber counters on it. As long as Arixmethes has a slumber counter on it, it's a land. (It's not a creature.) Whenever you cast a spell, you may remove a slumber counter from Arixmethes. {T}: Add {G}{U}.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

If you control four or fewer lands, search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Cycling—Sacrifice a land. (Sacrifice a land, Discard this card: Draw a card.)

{T}: Add {G}.

As Frontier Siege enters the battlefield, choose Khans or Dragons. • Khans — At the beginning of each of your main phases, add {G}{G}. • Dragons — Whenever a creature with flying enters the battlefield under your control, you may have it fight target creature you don't control.

Kicker {2} (You may pay an additional {2} as you cast this spell.) Search your library for a basic land card, put it onto the battlefield, then shuffle. If this spell was kicked, instead search your library for two basic land cards, put them onto the battlefield, then shuffle.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

{T}: Add {G}.

Landfall — Whenever a land enters the battlefield under your control, add one mana of any color.

Mana Bloom enters the battlefield with X charge counters on it. Remove a charge counter from Mana Bloom: Add one mana of any color. Activate only once each turn. At the beginning of your upkeep, if Mana Bloom has no charge counters on it, return it to its owner's hand.

Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle. Cycling {2} ({2}, Discard this card: Draw a card.)

Whenever one or more creatures you control deal combat damage to a player, tap all lands that player controls and untap all lands you control.

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

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

Search your library for a basic land card, put it onto the battlefield, then shuffle. Suspend 2—{G} (Rather than cast this card from your hand, you may pay {G} and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

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

{T}: Add {C}{C}.

You have no maximum hand size. {T}: Add {C}.

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

Up to one target creature gets -X/-X until end of turn. If X is 5 or more, return a creature card with mana value X or less from your graveyard to the battlefield tapped.

Gain control of target creature with mana value X or less. If X is 5 or more, create a token that's a copy of that creature.

Counter target spell.

Exile X target creatures. For each creature exiled this way, its controller creates a 2/2 green Boar creature token.

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.

Counter target noncreature spell.

Target creature you control gets +X/+X until end of turn. Then it fights up to one target creature you don't control.

Choose two — • Target player loses X life. • Return target creature card with mana value X or less from your graveyard to the battlefield. • Target creature gets -X/-X until end of turn. • Up to X target creatures gain fear until end of turn. (They can't be blocked except by artifact creatures and/or black creatures.)

Flash Ravenous (This creature enters the battlefield with X +1/+1 counters on it. If X is 5 or more, draw a card when it enters.) When Ravener enters the battlefield, target creature attacks target opponent this turn if able.

{B}, Remove X +1/+1 counters from among creatures you control: Target creature gets -X/-X until end of turn.

Choose one — • Destroy target artifact. • Destroy target enchantment. • Exile target card from a graveyard.

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.

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

If one or more tokens would be created, twice that many of those tokens are created instead. If one or more +1/+1 counters would be put on a creature, twice that many +1/+1 counters are put on that creature instead.

Ravenous (This creature enters the battlefield with X +1/+1 counters on it. If X is 5 or more, draw a card when it enters.) Death Frenzy — When Termagant Swarm dies, create a number of 1/1 green Tyranid creature tokens equal to Termagant Swarm's power.