Bellowing Tanglewurm

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)
Other green creatures you control have intimidate.

Ravager Wurm

Riot (This creature enters the battlefield with your choice of a +1/+1 counter or haste.)
When Ravager Wurm enters the battlefield, choose up to one —
• Ravager Wurm fights target creature you don't control.
• Destroy target land with an activated ability that isn't a mana ability.

Worldspine Wurm

Trample
When Worldspine Wurm dies, create three 5/5 green Wurm creature tokens with trample.
When Worldspine Wurm is put into a graveyard from anywhere, shuffle it into its owner's library.

Wurmweaver Coil

Enchant green creature
Enchanted creature gets +6/+6.
{G}{G}{G}, Sacrifice Wurmweaver Coil: Create a 6/6 green Wurm creature token.

Impervious Greatwurm

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Indestructible

Sandwurm Convergence

Creatures with flying can't attack you or planeswalkers you control.
At the beginning of your end step, create a 5/5 green Wurm creature token.

Warping Wurm

Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.)
At the beginning of your upkeep, Warping Wurm phases out unless you pay {2}{G}{U}.
Whenever Warping Wurm phases in, put a +1/+1 counter on it.

Duskdale Wurm

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Metamorphic Wurm

Threshold — Metamorphic Wurm gets +4/+4 as long as seven or more cards are in your graveyard.

Plated Wurm

Craw Wurm

Pouncing Wurm

Kicker {2}{G} (You may pay an additional {2}{G} as you cast this spell.)
If Pouncing Wurm was kicked, it enters the battlefield with three +1/+1 counters on it and with haste.

Elderscale Wurm

Trample
When Elderscale Wurm enters the battlefield, if your life total is less than 7, your life total becomes 7.
As long as you have 7 or more life, damage that would reduce your life total to less than 7 reduces it to 7 instead.

Dirtcowl Wurm

Whenever an opponent plays a land, put a +1/+1 counter on Dirtcowl Wurm.

Autochthon Wurm

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Trample

Wurmcalling

Buyback {2}{G} (You may pay an additional {2}{G} as you cast this spell. If you do, put this card into your hand as it resolves.)
Create an X/X green Wurm creature token.

Rootbreaker Wurm

Barbtooth Wurm

Plated Slagwurm

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Quilled Slagwurm

Roaring Slagwurm

Whenever Roaring Slagwurm attacks, tap all artifacts.

Conifer Wurm

Trample
{3}{G}: Conifer Wurm gets +X/+X until end of turn, where X is the number of snow permanents you control.

Wurm's Tooth

Whenever a player casts a green spell, you may gain 1 life.

Vigorspore Wurm

Undergrowth — When Vigorspore Wurm enters the battlefield, target creature gains vigilance and gets +X/+X until end of turn, where X is the number of creature cards in your graveyard.
Vigorspore Wurm can't be blocked by more than one creature.

Gravetiller Wurm

Trample
Morbid — Gravetiller Wurm enters the battlefield with four +1/+1 counters on it if a creature died this turn.

Fallow Wurm

When Fallow Wurm enters the battlefield, sacrifice it unless you discard a land card.

Ravaging Riftwurm

Kicker {4} (You may pay an additional {4} as you cast this spell.)
Vanishing 2 (This creature enters the battlefield with two time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
If Ravaging Riftwurm was kicked, it enters the battlefield with three additional time counters on it.

Wurmskin Forger

When Wurmskin Forger enters the battlefield, distribute three +1/+1 counters among one, two, or three target creatures.

Siege Wurm

Engulfing Slagwurm

Whenever Engulfing Slagwurm blocks or becomes blocked by a creature, destroy that creature. You gain life equal to that creature's toughness.

Thundering Wurm

When Thundering Wurm enters the battlefield, sacrifice it unless you discard a land card.

Argothian Wurm

Trample
When Argothian Wurm enters the battlefield, any player may sacrifice a land. If a player does, put Argothian Wurm on top of its owner's library.

Pathbreaker Wurm

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.)
As long as Pathbreaker Wurm is paired with another creature, both creatures have trample.

Ruination Wurm

Jungle Wurm

Whenever Jungle Wurm becomes blocked, it gets -1/-1 until end of turn for each creature blocking it beyond the first.

Slagwurm Armor

Equipped creature gets +0/+6.
Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)

Bookwurm

Trample
When Bookwurm enters the battlefield, you gain 3 life and draw a card.
{2}{G}: Put Bookwurm from your graveyard into your library third from the top.

Greater Sandwurm

Greater Sandwurm can't be blocked by creatures with power 2 or less.
Cycling {2} ({2}, Discard this card: Draw a card.)

Shivan Wurm

Trample
When Shivan Wurm enters the battlefield, return a red or green creature you control to its owner's hand.

Boneyard Wurm

Boneyard Wurm's power and toughness are each equal to the number of creature cards in your graveyard.

Golgari Rotwurm

{B}, Sacrifice a creature: Target player loses 1 life.

Havenwood Wurm

Flash (You may cast this spell any time you could cast an instant.)
Trample

Battering Wurm

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters the battlefield with a +1/+1 counter on it.)
Creatures with power less than Battering Wurm's power can't block it.

Enlisted Wurm

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)

Carnage Wurm

Bloodthirst 3 (If an opponent was dealt damage this turn, this creature enters the battlefield with three +1/+1 counters on it.)
Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Endless Wurm

Trample
At the beginning of your upkeep, sacrifice Endless Wurm unless you sacrifice an enchantment.

Scaled Wurm

Mungha Wurm

You can't untap more than one land during your untap step.

Novablast Wurm

Whenever Novablast Wurm attacks, destroy all other creatures.

Penumbra Wurm

Trample
When Penumbra Wurm dies, create a 6/6 black Wurm creature token with trample.

Armada Wurm

Trample
When Armada Wurm enters the battlefield, create a 5/5 green Wurm creature token with trample.

Panglacial Wurm

Trample
While you're searching your library, you may cast Panglacial Wurm from your library.

Symbiotic Wurm

When Symbiotic Wurm dies, create seven 1/1 green Insect creature tokens.

Pelakka Wurm

Trample
When Pelakka Wurm enters the battlefield, you gain 7 life.
When Pelakka Wurm dies, draw a card.

Tempting Wurm

When Tempting Wurm enters the battlefield, each opponent may put any number of artifact, creature, enchantment, and/or land cards from their hand onto the battlefield.

Predatory Wurm

Vigilance (Attacking doesn't cause this creature to tap.)
Predatory Wurm gets +2/+2 as long as you control a Garruk planeswalker.

Arrogant Wurm

Trample
Madness {2}{G} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Ravenous Lindwurm

When Ravenous Lindwurm enters the battlefield, you gain 4 life.

Winding Wurm

Echo {4}{G} (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.)

Broodhunter Wurm

Bramble Wurm

Reach, trample
When Bramble Wurm enters the battlefield, you gain 5 life.
{2}{G}, Exile Bramble Wurm from your graveyard: You gain 5 life.

Streetbreaker Wurm

Johtull Wurm

Whenever Johtull Wurm becomes blocked, it gets -2/-1 until end of turn for each creature blocking it beyond the first.

Whiptail Wurm

Nesting Wurm

Trample
When Nesting Wurm enters the battlefield, you may search your library for up to three cards named Nesting Wurm, reveal them, put them into your hand, then shuffle.

Witherscale Wurm

Whenever Witherscale Wurm blocks or becomes blocked by a creature, that creature gains wither until end of turn. (It deals damage to creatures in the form of -1/-1 counters.)
Whenever Witherscale Wurm deals damage to an opponent, remove all -1/-1 counters from it.

Roar of the Wurm

Create a 6/6 green Wurm creature token.
Flashback {3}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Spined Wurm

Advent of the Wurm

Create a 5/5 green Wurm creature token with trample.

Deathcoil Wurm

You may have Deathcoil Wurm assign its combat damage as though it weren't blocked.

Harvest Wurm

When Harvest Wurm enters the battlefield, sacrifice it unless you return a basic land card from your graveyard to your hand.

Sifter Wurm

Trample
When Sifter Wurm enters the battlefield, scry 3, then reveal the top card of your library. You gain life equal to that card's mana value.

Phantom Wurm

Phantom Wurm enters the battlefield with four +1/+1 counters on it.
If damage would be dealt to Phantom Wurm, prevent that damage. Remove a +1/+1 counter from Phantom Wurm.

Charnelhoard Wurm

Trample
Whenever Charnelhoard Wurm deals damage to an opponent, you may return target card from your graveyard to your hand.

Primordial Wurm

Voracious Wurm

Voracious Wurm enters the battlefield with X +1/+1 counters on it, where X is the amount of life you've gained this turn.

Tunneler Wurm

Discard a card: Regenerate Tunneler Wurm.

Segmented Wurm

Whenever Segmented Wurm becomes the target of a spell or ability, put a -1/-1 counter on it.

Crush of Wurms

Create three 6/6 green Wurm creature tokens.
Flashback {9}{G}{G}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Wurmcoil Engine

Deathtouch, lifelink
When Wurmcoil Engine dies, create a 3/3 colorless Phyrexian Wurm artifact creature token with deathtouch and a 3/3 colorless Phyrexian Wurm artifact creature token with lifelink.

Yavimaya Wurm

Gorger Wurm

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.)