Flycatcher Giraffid

This creature enters with your choice of a vigilance counter or a reach counter on it.

Undercity Necrolisk

{1}, Sacrifice another creature: Put a +1/+1 counter on this creature. It gains menace until end of turn. Activate only as a sorcery. (It can't be blocked except by two or more creatures.)

Whiptongue Hydra

Reach
When this creature enters, destroy all creatures with flying. Put a +1/+1 counter on this creature for each creature destroyed this way.

Golgari Brownscale

When this card 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.)

Hagra Crocodile

This creature can't block.
Landfall — Whenever a land you control enters, this creature gets +2/+2 until end of turn.

Ammit Eternal

Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.)
Whenever an opponent casts a spell, put a -1/-1 counter on this creature.
Whenever this creature deals combat damage to a player, remove all -1/-1 counters from it.

Tenacious Hunter

As long as a creature has a -1/-1 counter on it, this creature has vigilance and deathtouch.

Crocodile of the Crossing

Haste
When this creature enters, put a -1/-1 counter on target creature you control.

Crocanura

Reach (This creature can block creatures with flying.)
Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Algae Gharial

Shroud (This creature can't be the target of spells or abilities.)
Whenever another creature dies, you may put a +1/+1 counter on this creature.

Chevill, Bane of Monsters

Deathtouch
At the beginning of your upkeep, if your opponents control no permanents with bounty counters on them, put a bounty counter on target creature or planeswalker an opponent controls.
Whenever a permanent an opponent controls with a bounty counter on it dies, you gain 3 life and draw a card.

Brooding Saurian

At the beginning of each end step, each player gains control of all nontoken permanents they own.

Bloodspore Thrinax

Devour 1 (As this creature enters, you may sacrifice any number of creatures. It enters with that many +1/+1 counters on it.)
Each other creature you control enters with an additional X +1/+1 counters on it, where X is the number of +1/+1 counters on this creature.

Baleful Ammit

Lifelink
When this creature enters, put a -1/-1 counter on target creature you control.

Wardscale Crocodile

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Dukhara Scavenger

When this creature enters, you may put target artifact or creature card from your graveyard on top of your library.

Aetherwind Basker

Trample
Whenever this creature enters or attacks, you get {E} (an energy counter) for each creature you control.
Pay {E}: This creature gets +1/+1 until end of turn.

Emperor Crocodile

When you control no other creatures, sacrifice this creature.

Skeletal Crocodile

Vivien's Crocodile

This creature gets +1/+1 as long as you control a Vivien planeswalker.

Guul Draz Mucklord

When this creature dies, put a +1/+1 counter on target creature you control.

Stonefare Crocodile

{2}{B}: This creature gains lifelink until end of turn. (Damage dealt by this creature also causes you to gain that much life.)

Shefet Monitor

Cycling {3}{G} ({3}{G}, Discard this card: Draw a card.)
When you cycle this card, you may search your library for a basic land card or a Desert card, put it onto the battlefield, then shuffle. (Do this before you draw.)

Plated Rootwalla

{2}{G}: This creature gets +3/+3 until end of turn. Activate only once each turn.

Kheru Dreadmaw

Defender
{1}{G}, Sacrifice another creature: You gain life equal to the sacrificed creature's toughness.

Rootwater Alligator

Sacrifice a Forest: Regenerate this creature.

Rootwalla

{1}{G}: This creature gets +2/+2 until end of turn. Activate only once each turn.

Dross Crocodile

Lurking Crocodile

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters with a +1/+1 counter on it.)
Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

Catacomb Crocodile

Nema Siltlurker

Deathgazer

Whenever this creature blocks or becomes blocked by a nonblack creature, destroy that creature at end of combat.