Aura and Equipment spells you cast cost less to cast, where X is Golden-Tail Trainer's power.

Whenever Golden-Tail Trainer attacks, other modified creatures you control get +X/+X until end of turn, where X is Golden-Tail Trainer's power. (Equipment, Auras you control, and counters are modifications.)

For Mirrodin (When this Equipment enters, create a 2/2 red Rebel creature token, then attach this to it.)

Equipped creature gets +0/+1.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

When Golgari Brownscale is put into your hand from your graveyard, you gain 2 life.

Dredge 2 (If you would draw a card, you may mill two cards instead. If you do, return this card from your graveyard to your hand.)

Whenever a nontoken creature you control dies, create a 1/1 green Saproling creature token.

: Add or .

, , Sacrifice Golgari Locket: Draw two cards.

Defender, flying

: Put Gomazoa and each creature it's blocking on top of their owners' libraries, then those players shuffle.

Whenever another creature you control enters, put a +1/+1 counter on that creature.

Flying

When Gorging Vulture enters, mill four cards. You gain 1 life for each creature card milled this way. (To mill four cards, put the top four cards of your library into your graveyard.)

Whenever one or more creatures you control that entered this turn deal combat damage to a player, create a 5/5 red Dragon Spirit creature token with flying.

: Creatures you control gain haste until end of turn.

Graceblade Artisan gets +2/+2 for each Aura attached to it.

Whenever Graceful Cat attacks, it gets +1/+1 until end of turn.

Enchant land

When Grafted Growth enters, put a +1/+1 counter on target creature or Vehicle you control.

Enchanted land has ": Add two mana of any one color."

Grakmaw, Skyclave Ravager enters 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.

When you unlock this door, create a 1/1 white Glimmer enchantment creature token.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Enchant creature

Enchanted creature gets +1/+0 for each Mountain you control.

All creatures with art by the artist of your choice get +2/+2 and gain trample until end of turn.

Reach

When Grasping Longneck dies, you gain 2 life.

Defender, protection from Zombies

, : Exile target artifact card from a graveyard. You gain 2 life.

When Gravegouger enters, exile up to two target cards from a single graveyard.

When Gravegouger leaves the battlefield, return the exiled cards to their owner's graveyard.

Flying

When Gravelighter enters, draw a card if a creature died this turn. Otherwise, each player sacrifices a creature.

Put any number of target creature cards from your graveyard on top of your library.

Draw a card.

Ward—Discard a card.

Whenever Graveyard Trespasser enters or attacks, exile up to one target card from a graveyard. If a creature card was exiled this way, each opponent loses 1 life and you gain 1 life.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Whenever a creature with flying attacks, it loses flying until end of turn.

As long as there are four or more creature cards in your graveyard, Gray Slaad has menace and deathtouch.

Landfall — Whenever a land you control enters, you may gain 2 life.

This spell can't be countered.

Protection from blue and from black (This creature can't be blocked, targeted, dealt damage, or enchanted by anything blue or black.)

Equipped creature gets +3/+0.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

At the beginning of each player's upkeep, if that player controls more lands than each other player, the player creates a 1/1 green Saproling creature token.

: Add .

When Greta, Sweettooth Scourge enters, create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

, Sacrifice a Food: Put a +1/+1 counter on target creature. Activate only as a sorcery.

, Sacrifice a Food: You draw a card and you lose 1 life.

Enchant creature

Enchanted creature gets +2/+2 and has flying.

When enchanted creature dies, create a 2/2 white Griffin creature token with flying.

Flash

As Grifter's Blade enters, choose a creature you control it could be attached to. If you do, it enters attached to that creature.

Equipped creature gets +1/+1.

Equip

Return a Pirate card from your graveyard to your hand, then do the same for Vampire, Dinosaur, and Merfolk.

: Grim Draugr gets +1/+0 and gains menace until end of turn. (It can't be blocked except by two or more creatures. can be paid with one mana from a snow source.)

Constellation — Whenever Grim Guardian or another enchantment you control enters, each opponent loses 1 life.

Search your library for a nonland card and reveal it. Each opponent who cast a spell this turn with the same name as that card loses 6 life. Then shuffle.

: Return Grim Reminder from your graveyard to your hand. Activate only during your upkeep.

Search your library for a card, put that card into your hand, then shuffle. You lose 3 life.

Grimdancer enters with your choice of two different counters on it from among menace, deathtouch, and lifelink.

Gain control of target Equipment, then create a 0/0 black Phyrexian Germ creature token and attach that Equipment to it.

When Grishnákh, Brash Instigator enters, amass Orcs 2. When you do, until end of turn, gain control of target nonlegendary creature an opponent controls with power less than or equal to the amassed Army's power. Untap that creature. It gains haste until end of turn.

Enchant creature

When Grisly Transformation enters, draw a card.

Enchanted creature has intimidate. (It can't be blocked except by artifact creatures and/or creatures that share a color with it.)

As long as Grist, the Hunger Tide isn't on the battlefield, it's a 1/1 Insect creature in addition to its other types.

+1: Create a 1/1 black and green Insect creature token, then mill a card. If an Insect card was milled this way, put a loyalty counter on Grist and repeat this process.

−2: You may sacrifice a creature. When you do, destroy target creature or planeswalker.

−5: Each opponent loses life equal to the number of creature cards in your graveyard.

, : Draw a card, then discard a card.

, : Target creature can't block this turn.

: Mill two cards. Then if there is a colorless creature card in your graveyard, transform Grizzled Angler.

: Grizzled Wolverine gets +2/+0 until end of turn. Activate only during the declare blockers step, only if at least one creature is blocking Grizzled Wolverine, and only once each turn.

Whenever Grotag Night-Runner deals combat damage to a player, exile the top card of your library. You may play that card this turn.

Trample, haste

At the beginning of the end step, sacrifice Groundbreaker.