Bog Wraith

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

Grizzly Bears

Sea Serpent

Sea Serpent can't attack unless defending player controls an Island.
When you control no Islands, sacrifice Sea Serpent.

Sengir Vampire

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever a creature dealt damage by Sengir Vampire this turn dies, put a +1/+1 counter on Sengir Vampire.

Scathe Zombies

Merfolk of the Pearl Trident

Roc of Kher Ridges

Clone

You may have Clone enter as a copy of any creature on the battlefield.

Birds of Paradise

Pearled Unicorn

Vorstclaw

Fire Elemental

Hurloon Minotaur

Embermaw Hellion

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
If another red source you control would deal damage to a permanent or player, it deals that much damage plus 1 to that permanent or player instead.

Valor Singer

Combat Inspiration — At the beginning of combat on your turn, target creature you control gets +1/+0 until end of turn.

Pyroclastic Elemental

{1}{R}{R}: Pyroclastic Elemental deals 1 damage to target player.

Water Elemental

Frozen Shade

{B}: Frozen Shade gets +1/+1 until end of turn.

Bannerhide Krushok

Trample
Reinforce 2—{1}{G} ({1}{G}, Discard this card: Put two +1/+1 counters on target creature.)
Scavenge {5}{G}{G} ({5}{G}{G}, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)

Serra Angel

Flying
Vigilance (Attacking doesn't cause this creature to tap.)

Gray Ogre

Air Elemental

Hill Giant

Giant Spider

Reach (This creature can block creatures with flying.)

Craw Wurm

Terrain Elemental

Mons's Goblin Raiders

Shivan Dragon

Flying
{R}: This creature gets +1/+0 until end of turn.

Phantom Monster

Obsianus Golem

War Mammoth

Mahamoti Djinn

Flying (This creature can't be blocked except by creatures with flying or reach.)

Ilharg, the Raze-Boar

Trample
Whenever Ilharg, the Raze-Boar attacks, you may put a creature card from your hand onto the battlefield tapped and attacking. Return that creature to your hand at the beginning of the next end step.
When Ilharg, the Raze-Boar dies or is put into exile from the battlefield, you may put it into its owner's library third from the top.

Earth Elemental

Djinn of Wishes

Flying
Djinn of Wishes enters with three wish counters on it.
{2}{U}{U}, Remove a wish counter from Djinn of Wishes: Reveal the top card of your library. You may play that card without paying its mana cost. If you don't, exile it.

Magnigoth Sentry

Frenzied Raptor

Savannah Lions

Hydra Omnivore

Whenever Hydra Omnivore deals combat damage to an opponent, it deals that much damage to each other opponent.

Rampaging Baloths

Trample
Landfall — Whenever a land you control enters, you may create a 4/4 green Beast creature token.

Phantasmal Forces

Flying
At the beginning of your upkeep, sacrifice Phantasmal Forces unless you pay {U}.