Otarian Juggernaut

This creature can't be blocked by Walls.
Threshold — As long as seven or more cards are in your graveyard, this creature gets +3/+0 and attacks each combat if able.

Flow of Maggots

Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
This creature can't be blocked by non-Wall creatures.

Kor Castigator

This creature can't be blocked by Eldrazi Scions.

Departed Deckhand

When this creature becomes the target of a spell, sacrifice it.
This creature can't be blocked except by Spirits.
{3}{U}: Another target creature you control can't be blocked this turn except by Spirits.

Elven Riders

This creature can't be blocked except by Walls and/or creatures with flying.

Rubblebelt Runner

This creature can't be blocked by creature tokens.

Gnat Alley Creeper

This creature can't be blocked by creatures with flying.

Blazing Torch

Equipped creature can't be blocked by Vampires or Zombies.
Equipped creature has "{T}, Sacrifice Blazing Torch: Blazing Torch deals 2 damage to any target."
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Bog Rats

Stromkirk Noble

This creature can't be blocked by Humans.
Whenever this creature deals combat damage to a player, put a +1/+1 counter on it.

Orchard Spirit

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

Infiltrator's Magemark

Enchant creature
Creatures you control that are enchanted get +1/+1 and can't be blocked except by creatures with defender.

Field of Reality

Enchant creature
Enchanted creature can't be blocked by Spirits.
{1}{U}: Return this Aura to its owner's hand.

Treetop Scout

This creature can't be blocked except by creatures with flying.

Joven's Tools

{4}, {T}: Target creature can't be blocked this turn except by Walls.

Gingerbrute

Haste (This creature can attack and {T} as soon as it comes under your control.)
{1}: This creature can't be blocked this turn except by creatures with haste.
{2}, {T}, Sacrifice this creature: You gain 3 life.

Deathcult Rogue

This creature can't be blocked except by Rogues.

Rampart Crawler

Invisibility

Enchant creature
Enchanted creature can't be blocked except by Walls.

Stone Spirit

Signal Pest

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)
This creature can't be blocked except by creatures with flying or reach.

Skyblinder Staff

Equipped creature gets +1/+0 and can't be blocked by creatures with flying.
Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)

Serpent of Yawning Depths

Krakens, Leviathans, Octopuses, and Serpents you control can't be blocked except by Krakens, Leviathans, Octopuses, and Serpents.

Shifting Sliver

Slivers can't be blocked except by Slivers.

Prowler's Helm

Equipped creature can't be blocked except by Walls.
Equip {2}

Rime Transfusion

Enchant creature
Enchanted creature gets +2/+1 and has "{S}: This creature can't be blocked this turn except by snow creatures." ({S} can be paid with one mana from a snow source.)

Rampart Smasher

This creature can't be blocked by Knights or Walls.

Artifact Ward

Enchant creature
Enchanted creature can't be blocked by artifact creatures.
Prevent all damage that would be dealt to enchanted creature by artifact sources.
Enchanted creature can't be the target of abilities from artifact sources.

Canopy Cover

Enchant creature
Enchanted creature can't be blocked except by creatures with flying or reach.
Enchanted creature can't be the target of spells or abilities your opponents control.

Vindictive Mob

When this creature enters, sacrifice a creature.
This creature can't be blocked by Saprolings.

Raging River

Whenever one or more creatures you control attack, each defending player divides all creatures without flying they control into a "left" pile and a "right" pile. Then, for each attacking creature you control, choose "left" or "right." That creature can't be blocked this combat except by creatures with flying and creatures in a pile with the chosen label.

Spire Tracer

Fen Hauler

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
This creature can't be blocked by artifact creatures.

River Darter

This creature can't be blocked by Dinosaurs.

Tin Street Dodger

Haste
{R}: This creature can't be blocked this turn except by creatures with defender.

Cloak of Invisibility

Enchant creature
Enchanted creature has phasing and can't be blocked except by Walls. (It phases in or out before its controller untaps during each of their untap steps. While it's phased out, it's treated as though it doesn't exist.)

Skirk Shaman

This creature can't be blocked except by artifact creatures and/or red creatures.

Silhana Ledgewalker

Hexproof (This creature can't be the target of spells or abilities your opponents control.)
This creature can't be blocked except by creatures with flying.

Amrou Seekers

This creature can't be blocked except by artifact creatures and/or white creatures.

Treetop Bracers

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Enchanted creature gets +1/+1 and can't be blocked except by creatures with flying.

Tower of Coireall

{T}: Target creature can't be blocked by Walls this turn.

Firefright Mage

{1}{R}, {T}, Discard a card: Target creature can't be blocked this turn except by artifact creatures and/or red creatures.

Treetop Rangers

Legion Loyalist

Haste
Battalion — Whenever this creature and at least two other creatures attack, creatures you control gain first strike and trample until end of turn and can't be blocked by creature tokens this turn.

Seeker

Enchant creature
Enchanted creature can't be blocked except by artifact creatures and/or white creatures.

Audacious Infiltrator

This creature can't be blocked by artifact creatures.

Temple Thief

This creature can't be blocked by enchanted creatures or enchantment creatures.

Basalt Golem

This creature can't be blocked by artifact creatures.
Whenever this creature becomes blocked by a creature, that creature's controller sacrifices it at end of combat. If the player does, they create a 0/2 colorless Wall artifact creature token with defender.

Juggernaut

This creature attacks each combat if able.
This creature can't be blocked by Walls.

Noggle Bandit

This creature can't be blocked except by creatures with defender.

Argothian Pixies

This creature can't be blocked by artifact creatures.
Prevent all damage that would be dealt to this creature by artifact creatures.

Evil Eye of Orms-by-Gore

Non-Eye creatures you control can't attack.
This creature can't be blocked except by Walls.

Clockwork Swarm

This creature enters with four +1/+0 counters on it.
This creature can't be blocked by Walls.
At end of combat, if this creature attacked or blocked this combat, remove a +1/+0 counter from it.
{X}, {T}: Put up to X +1/+0 counters on this creature. This ability can't cause the total number of +1/+0 counters on this creature to be greater than four. Activate only during your upkeep.

Varchild's Crusader

{0}: This creature can't be blocked this turn except by Walls. Sacrifice this creature at the beginning of the next end step.