Pauper: Which cards were downgraded to Common with Commander Masters

List of cards:

All That Glitters

Generous Gift

Ministrant of Obligation

Myrsmith

Spectral Grasp

Sunblade Angel

Supply Runners

List of cards:

Cryptic Serpent

Filigree Attendant

Goliath Sphinx (from Rare)

Murmuring Mystic

Renowned Weaponsmith

Reverse Engineer

Shipwreck Dowser

Vizier of Tumbling Sands

Windrider Wizard

List of cards:

Carrion Grub

Demon's Disciple

Dread Return

Drown in Sorrow

Legion Vanguard

Lotleth Giant

Mire Triton

Nadier's Nightblade

Phyrexian Gargantua

Witch's Cauldron

List of cards:

Blood Aspirant

Cyclops Electromancer

Dwarven Hammer

Guttersnipe

Rapacious One

Spitebellows

Sulfurous Blast

List of cards:

Crash of Rhino Beetles (also from Rare)

Crawling Infestation

Rot Shambler

Skysnare Spider

List of cards:

Brass Knuckles

Campfire

Firemind Vessel

Vulshok Battlegear