Treetop Rangers

Treetop Rangers can't be blocked except by creatures with flying.

Serpent of Yawning Depths

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

Spire Tracer

Spire Tracer can't be blocked except by creatures with flying or reach.

Tin Street Dodger

Haste
{R}: Tin Street Dodger can't be blocked this turn except by creatures with defender.

Seeker

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

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.)

Stone Spirit

Stone Spirit can't be blocked by creatures with flying.

Rampart Smasher

Rampart Smasher can't be blocked by Knights or Walls.

Clockwork Swarm

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

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.

Orchard Spirit

Orchard Spirit can't be blocked except by creatures with flying or reach.

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.

Legion Loyalist

Haste
Battalion — Whenever Legion Loyalist 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.

Joven's Tools

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

Rampart Crawler

Rampart Crawler can't be blocked by Walls.

Kor Castigator

Kor Castigator can't be blocked by Eldrazi Scions.

Silhana Ledgewalker

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

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.)

Deathcult Rogue

Deathcult Rogue can't be blocked except by Rogues.

Departed Deckhand

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

Amrou Seekers

Amrou Seekers can't be blocked except by artifact creatures and/or white creatures.

Noggle Bandit

Noggle Bandit can't be blocked except by creatures with defender.

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.

Shifting Sliver

Slivers can't be blocked except by Slivers.

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.

Elven Riders

Elven Riders can't be blocked except by Walls and/or creatures with flying.

Gingerbrute

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

Juggernaut

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

Firefright Mage

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

Invisibility

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

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.)
Flow of Maggots can't be blocked by non-Wall creatures.

Infiltrator's Magemark

Enchant creature
Creatures you control that are enchanted get +1/+1 and can't be blocked 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.)

Varchild's Crusader

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

River Darter

River Darter can't be blocked by Dinosaurs.

Basalt Golem

Basalt Golem can't be blocked by artifact creatures.
Whenever Basalt Golem 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.

Temple Thief

Temple Thief can't be blocked by enchanted creatures or enchantment creatures.

Signal Pest

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

Field of Reality

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

Skirk Shaman

Skirk Shaman can't be blocked except by artifact creatures and/or red creatures.

Gnat Alley Creeper

Gnat Alley Creeper can't be blocked by creatures with flying.

Bog Rats

Treetop Scout

Treetop Scout can't be blocked except by creatures with flying.

Otarian Juggernaut

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

Audacious Infiltrator

Audacious Infiltrator can't be blocked by artifact creatures.

Argothian Pixies

Argothian Pixies can't be blocked by artifact creatures.
Prevent all damage that would be dealt to Argothian Pixies by artifact creatures.

Tower of Coireall

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

Fen Hauler

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

Rubblebelt Runner

Rubblebelt Runner can't be blocked by creature tokens.

Vindictive Mob

When Vindictive Mob enters, sacrifice a creature.
Vindictive Mob can't be blocked by Saprolings.

Prowler's Helm

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

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.

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.)

Evil Eye of Orms-by-Gore

Non-Eye creatures you control can't attack.
Evil Eye of Orms-by-Gore can't be blocked except by Walls.