Flying

Whenever Scythe Specter deals combat damage to a player, each opponent discards a card. Each player who discarded a card with the highest mana value among cards discarded this way loses life equal to that mana value.

Secluded Steppe enters tapped.

: Add .

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

As Sewer Nemesis enters, choose a player.

Sewer Nemesis's power and toughness are each equal to the number of cards in the chosen player's graveyard.

Whenever the chosen player casts a spell, that player mills a card.

Target player draws two cards and loses 2 life.

, : Add .

Slipstream Eel can't attack unless defending player controls an Island.

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

: Add .

Strive — This spell costs 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.

When Spine of Ish Sah enters, destroy target permanent.

When Spine of Ish Sah is put into a graveyard from the battlefield, return Spine of Ish Sah to its owner's hand.

Create a token that's a copy of target creature.

Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Starstorm deals X damage to each creature.

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

Giant spells you cast cost less to cast.

: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)

When Stoneshock Giant becomes monstrous, creatures without flying your opponents control can't block this turn.

Vigilance

Whenever Sun Titan enters or attacks, you may return target permanent card with mana value 3 or less from your graveyard to the battlefield.

Other Giant creatures you control get +2/+2 and have trample.

Exile up to two target artifacts and/or enchantments.

Basic landcycling (, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

Each other player discards a card. You draw a card for each card discarded this way.

Changeling (This card is every creature type.)

Whenever an opponent casts a spell, you may put a +1/+1 counter on this creature.

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

As The Mimeoplasm enters, you may exile two creature cards from graveyards. If you do, it enters as a copy of one of those cards with a number of additional +1/+1 counters on it equal to the power of the other card.

Flying

Whenever Thrummingbird deals combat damage to a player, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

, , Discard a card: You gain 4 life.

, , Pay 1 life: Create a 0/1 white Goat creature token.

, , Sacrifice a creature: Return target artifact card from your graveyard to your hand.

, , Sacrifice an artifact: Draw a card.

Delve (Each card you exile from your graveyard while casting this spell pays for .)

Draw three cards.

Flying

Triskelavus enters with three +1/+1 counters on it.

, Remove a +1/+1 counter from Triskelavus: Create a 1/1 colorless Triskelavite artifact creature token with flying. It has "Sacrifice this creature: This creature deals 1 damage to any target."

Haste

When Tuktuk the Explorer dies, create Tuktuk the Returned, a legendary 5/5 colorless Goblin Golem artifact creature token.

Flying, haste

Lieutenant — As long as you control your commander, Tyrant's Familiar gets +2/+2 and has "Whenever Tyrant's Familiar attacks, it deals 7 damage to target creature defending player controls."

Each opponent discards two cards.

As Urza's Incubator enters, choose a creature type.

Creature spells of the chosen type cost less to cast.

Vivid Crag enters tapped with two charge counters on it.

: Add .

, Remove a charge counter from Vivid Crag: Add one mana of any color.

Destroy target nonbasic land you don't control and target nonbasic land of an opponent's choice you don't control.

Volcanic Offering deals 7 damage to target creature you don't control and 7 damage to target creature of an opponent's choice you don't control.

Flying

Whenever Vorosh, the Hunter deals combat damage to a player, you may pay . If you do, put six +1/+1 counters on Vorosh.

Enchant creature

Enchanted creature gets +2/+2, has intimidate, and can't attack you or planeswalkers you control. (A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Flying

Whenever a card is put into an opponent's graveyard from anywhere, put a +1/+1 counter on Vulturous Zombie.

Flying

All creatures attack each combat if able.

: Attacking creatures get +1/+0 until end of turn.

, , Sacrifice Wayfarer's Bauble: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

Flying

As long as Wonder is in your graveyard and you control an Island, creatures you control have flying.

Worn Powerstone enters tapped.

: Add .

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.