Flying

When Gilded Drake enters the battlefield, exchange control of Gilded Drake and up to one target creature an opponent controls. If you don't or can't make an exchange, sacrifice Gilded Drake. This ability still resolves if its target becomes illegal.

First strike, haste

: Goblin Festival deals 1 damage to any target. Flip a coin. If you lose the flip, choose one of your opponents. That player gains control of Goblin Festival.

Whenever Goblin Lackey deals damage to a player, you may put a Goblin permanent card from your hand onto the battlefield.

When Goblin Masons dies, destroy target Wall.

Whenever Goblin Medics becomes tapped, it deals 1 damage to any target.

Echo (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.)

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

: Choose target artifact a player controls and target artifact card in that player's graveyard. If both targets are still legal as this ability resolves, that player simultaneously sacrifices the artifact and returns the artifact card to the battlefield.

Enchant creature

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

Sacrifice a creature: Draw cards equal to the sacrificed creature's power, then discard three cards.

Grim Monolith doesn't untap during your untap step.

: Add .

: Untap Grim Monolith.

Put all enchantments on top of their owners' libraries.

Attacking creatures gain first strike until end of turn.

: Add .

, Sacrifice Heart Warden: Draw a card.

Flying, vigilance

Echo (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.)

Return all green permanents to their owners' hands.

When an opponent casts an instant spell, if Hidden Gibbons is an enchantment, Hidden Gibbons becomes a 4/4 Ape creature.

When an opponent plays a nonbasic land, if Hidden Herd is an enchantment, Hidden Herd becomes a 3/3 Beast creature.

When an opponent casts a creature spell with flying, if Hidden Spider is an enchantment, Hidden Spider becomes a 3/5 Spider creature with reach. (It can block creatures with flying.)

Whenever Hollow Dogs attacks, it gets +2/+0 until end of turn.

: Hopping Automaton gets -1/-1 and gains flying until end of turn.

Hulking Ogre can't block.

Echo (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.)

When Hunting Moa enters the battlefield or dies, put a +1/+1 counter on target creature.

Exile Ill-Gotten Gains. Each player discards their hand, then returns up to three cards from their graveyard to their hand.

At the beginning of your upkeep, if you have a card in hand, return Imaginary Pet to its owner's hand.

At the beginning of your upkeep, if there are seven or more lands on the battlefield, sacrifice Impending Disaster and destroy all lands.

Counter target spell that targets a creature.

Flying

When Iridescent Drake enters the battlefield, put target Aura card from a graveyard onto the battlefield under your control attached to Iridescent Drake.

Target creature gets +0/+4 until end of turn.

Cycling (, Discard this card: Draw a card.)

, : Reveal any number of green cards in your hand. Target creature gets +X/+X until end of turn, where X is the number of cards revealed this way.

, : Reveal any number of white cards in your hand. You gain 2 life for each card revealed this way.

Flying

When Junk Diver dies, return another target artifact card from your graveyard to your hand.

Whenever Karn, Silver Golem blocks or becomes blocked, it gets -4/+4 until end of turn.

: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn.

Echo (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.)

When Keldon Vandals enters the battlefield, destroy target artifact.

Flying

When Kingfisher dies, draw a card.

Sacrifice any number of Mountains. Landslide deals that much damage to target player or planeswalker.

Enchant creature

Enchanted creature has flying.

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

Destroy target land.

Cycling (, Discard this card: Draw a card.)

Whenever a creature dies, if another creature is on the battlefield, return the first card to the battlefield under its owner's control at the beginning of the next end step.

At the beginning of your upkeep, you may put a verse counter on Lilting Refrain.

Sacrifice Lilting Refrain: Counter target spell unless its controller pays , where X is the number of verse counters on Lilting Refrain.

You may have Lone Wolf assign its combat damage as though it weren't blocked.

At the beginning of your upkeep, you may put a petal counter on Lotus Blossom.

, Sacrifice Lotus Blossom: Add X mana of any one color, where X is the number of petal counters on Lotus Blossom.

Pay half your life, rounded up: Lurking Evil becomes a 4/4 Phyrexian Horror creature with flying.

When a creature is put into an opponent's graveyard from the battlefield, if Lurking Skirge is an enchantment, Lurking Skirge becomes a 3/2 Phyrexian Imp creature with flying.

You may choose not to untap Mana Leech during your untap step.

: Tap target land. It doesn't untap during its controller's untap step for as long as Mana Leech remains tapped.

Enchant creature

Enchanted creature has haste.

At the beginning of the end step, return Mark of Fury to its owner's hand.

Sacrifice a creature: The next time a source of your choice would deal damage to any target this turn, prevent that damage.

: Prevent the next 4 damage that would be dealt to any target this turn.