Urza, Lord High Artificer [Modern Horizons] Human Rebel Knight and hide like hermits

and hide like hermits

Set: Mirrodin Type: Artifact Creature — Construct Rarity: Uncommon Cost: {4} Whenever Duskworker becomes blocked

Set: Lorwyn Type: Creature — Kithkin Soldier Rarity: Uncommon Cost: {W} As an additional cost to cast this spell

{T}: Add one mana of any color in your commander's color identity

Set: Tenth Edition Type: Creature — Spirit Rarity: Rare Cost: {3}{R} At the beginning of each opponent's upkeep

Urza, Lord High Artificer [Modern Horizons] Human Rebel Knight and hide like hermitsSet: Modern Horizons Type: Legendary Creature Human Artificer Rarity: Mythic Cost: {2}{U}{U} When Urza, Lord High Artificer enters the battlefield, create a 0 0 colorless Construct artifact creature token with "This creature gets +1 +1 for each artifact you control." Tap an untapped artifact you control: Add {U}. {5}: Shuffle your library, then exile the top card. Until end of turn, you may play that card without paying its mana cost.