Flying

Discard a card: Switch Aeromoeba's power and toughness until end of turn.

Creatures blocking or blocked by Alms Beast have lifelink.

As long as it's your turn, commanders you control have indestructible. (Effects that say "destroy" don't destroy them. A creature with indestructible can't be destroyed by damage.)

Partner (You can have two commanders if both have partner.)

Discard two cards: Exile Anurid Brushhopper. Return it to the battlefield under its owner's control at the beginning of the next end step.

Protection from black

At the beginning of your upkeep, sacrifice Anurid Scavenger unless you put a card from your graveyard on the bottom of your library.

Discard a card: Switch Aquamoeba's power and toughness until end of turn.

Whenever Arashin War Beast deals combat damage to one or more blocking creatures, manifest the top card of your library. (Put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Reach

When Arboreal Grazer enters the battlefield, you may put a land card from your hand onto the battlefield tapped.

First strike

Modular 4 (This creature enters the battlefield with four +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

, Exile the top ten cards of your library: Arc-Slogger deals 2 damage to any target.

Armored Scrapgorger gets +3/+0 as long as it has three or more oil counters on it.

: Add one mana of any color.

Whenever Armored Scrapgorger becomes tapped, exile target card from a graveyard and put an oil counter on Armored Scrapgorger.

Flying, trample

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Whenever this creature mutates, exile cards from the top of your library until you exile X permanent cards, where X is the number of times this creature has mutated. Put those permanent cards onto the battlefield.

Kicker (You may pay an additional as you cast this spell.)

If Baloth Gorger was kicked, it enters the battlefield with three +1/+1 counters on it.

Trample

When Baloth Packhunter enters the battlefield, put two +1/+1 counters on each other creature you control named Baloth Packhunter.

Landfall — Whenever a land enters the battlefield under your control, Baloth Woodcrasher gets +4/+4 and gains trample until end of turn.

When you control no Swamps, sacrifice Barbarian Outcast.

When Batterhorn enters the battlefield, you may destroy target artifact.

Trample

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Whenever Bazaar Krovod attacks, another target attacking creature gets +0/+2 until end of turn. Untap that creature.

: Beast Walkers gains banding until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Whenever a Beast becomes blocked, it gets +1/+1 until end of turn for each creature blocking it.

When Blight-Breath Catoblepas enters the battlefield, target creature an opponent controls gets -X/-X until end of turn, where X is your devotion to black. (Each in the mana costs of permanents you control counts toward your devotion to black.)

Trample

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

Whenever Bloated Contaminator 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.)

Whenever Blossoming Bogbeast attacks, you gain 2 life. Then creatures you control gain trample and get +X/+X until end of turn, where X is the amount of life you gained this turn.

Whenever a permanent is turned face up, Bonethorn Valesk deals 1 damage to any target.

Trample

Whenever Book Devourer deals combat damage to a player, you may discard all the cards in your hand. If you do, draw that many cards.

Whenever Bounding Felidar attacks while saddled, put a +1/+1 counter on each other creature you control. You gain 1 life for each of those creatures.

Saddle 2 (Tap any number of other creatures you control with total power 2 or more: This Mount becomes saddled until end of turn. Saddle only as a sorcery.)

Trample

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Trample

Provoke (Whenever this creature attacks, you may have target creature defending player controls untap and block it if able.)

Vigilance

Vigilance, haste

When Burrowing Razormaw dies, mill four cards. (Put the top four cards of your library into your graveyard.)

Trample

Myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token that's a copy of this creature that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Amplify 1 <I>(As this creature enters the battlefield, put a +1/+1 counter on it for each Beast card you reveal in your hand.)</I>

: Target creature gets +1/+1 until end of turn for each +1/+1 counter on Canopy Crawler.

: Put a +1/+1 counter on Carnivorous Moss-Beast.

: Cavern Thoctar gets +1/+0 until end of turn.

, : Chainflinger deals 1 damage to any target.

Threshold — , : Chainflinger deals 2 damage to any target. Activate only if seven or more cards are in your graveyard.

You may reveal this card from your opening hand. If you do, at the beginning of your first main phase, add .

Vigilance, reach

Assist (Another player can pay up to of this spell's cost.)

Trample

: Chartooth Cougar gets +1/+0 until end of turn.

Mountaincycling (, Discard this card: Search your library for a Mountain card, reveal it, put it into your hand, then shuffle.)

Fathomless descent — When Chupacabra Echo enters the battlefield, target creature an opponent controls gets -X/-X until end of turn, where X is the number of permanent cards in your graveyard.

Clockwork Beast enters the battlefield with seven +1/+0 counters on it.

At end of combat, if Clockwork Beast attacked or blocked this combat, remove a +1/+0 counter from it.

, : Put up to X +1/+0 counters on Clockwork Beast. This ability can't cause the total number of +1/+0 counters on Clockwork Beast to be greater than seven. Activate only during your upkeep.

Whenever Coalhauler Swine is dealt damage, it deals that much damage to each player.

When Contagious Vorrac enters the battlefield, look at the top four cards of your library. You may reveal a land card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. If you didn't put a card into your hand this way, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Copperhoof Vorrac gets +1/+1 for each untapped permanent your opponents control.