Whenever you cast a noncreature spell, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)
Delirium — As long as there are four or more card types among cards in your graveyard, Dragon's Rage Channeler gets +2/+2, has flying, and attacks each combat if able.

: Blazing Rootwalla gets +2/+0 until end of turn. Activate only once each turn.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

When Shoreline Scout enters the battlefield, you may exile a Merfolk card or a land card from your hand. If you do, conjure a card named Tropical Island into your hand.
As long as another Merfolk or an Island entered the battlefield under your control this turn, Shoreline Scout gets +1/+0.

Lifelink
, Sacrifice a creature: Put a +1/+1 counter on each Vampire you control.

Exile target creature. Its controller gains life equal to its power.

Whenever Longtusk Stalker enters or attacks, you get .
Pay : Longtusk Stalker perpetually gets +1/+0. You may choose a creature card in your hand. If you do, that card perpetually gets +1/+0.

Battalion — Whenever Boros Elite and at least two other creatures attack, Boros Elite gets +2/+2 until end of turn.

Until end of turn, target creature you control becomes a green Wurm with base power and toughness 6/4.
Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Whenever you sacrifice an artifact or creature, put a +1/+1 counter on Ravenous Squirrel.
, Sacrifice an artifact or creature: You gain 1 life and draw a card.

When Squirrel Sanctuary enters, create a 1/1 green Squirrel creature token.
Whenever a nontoken creature you control dies, you may pay . If you do, return Squirrel Sanctuary to its owner's hand.

Reach
Wren's Run Hydra enters with X +1/+1 counters on it.
Reinforce X— (, Discard this card: Put X +1/+1 counters on target creature.)

Reach
When Skyshroud Lookout enters, seek an Elf card.

When Barbed Spike enters, create a 1/1 colorless Thopter artifact creature token with flying, then attach Barbed Spike to it.
Equipped creature gets +1/+0.
Equip

Whenever you discard a card, you may pay . If you do, amass Zombies 2. (Put two +1/+1 counters on an Army you control. It's also a Zombie. If you don't control an Army, create a 0/0 black Zombie Army creature token first.)

Clattering Augur can't block.
When Clattering Augur enters, you draw a card and you lose 1 life.
: Return Clattering Augur from your graveyard to your hand.

Sliver creatures you control have ": Add one mana of any color."

Whenever a Sliver creature you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays .

Starting intensity 3
Static Discharge deals damage equal to its intensity to any target. Then cards you own named Static Discharge intensify by 1.

Monoskelion enters with a +1/+1 counter on it.
, Remove a +1/+1 counter from Monoskelion: It deals 1 damage to any target.

Haste
Echo—Discard a card. (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.)

Enchant creature
Enchanted creature gets +1/+1 and has flying.
: Return Skyblade's Boon to its owner's hand. Activate only if Skyblade's Boon is on the battlefield or in your graveyard.

: Return this card from your graveyard to the battlefield tapped.

Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.)
Equipped creature gets +1/+1 and has vigilance and lifelink.
Equip

, Sacrifice another creature: Legion Vanguard explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

Other Squirrels you control get +1/+1.

Discard a card: Transform Heir of Falkenrath. Activate only once each turn.

, : Draw a card, then discard a card.
Delirium — , : Draw a card. Activate only if there are four or more card types among cards in your graveyard.

Reach, lifelink
Outlast (, : Put a +1/+1 counter on this creature. Outlast only as a sorcery.)
Each other creature you control without a +1/+1 counter on it has outlast .

When Carrier Thrall dies, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add ."

Whenever a Sliver you control attacks, defending player loses 1 life.

When Ruination Rioter dies, you may have it deal damage to any target equal to the number of land cards in your graveyard.

Each Sliver creature card in your graveyard has unearth .
Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Flying

Flying
Nimbus Swimmer enters with X +1/+1 counters on it.

Flash
When Munitions Expert enters, you may have it deal damage to target creature or planeswalker equal to the number of Goblins you control.