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

(Gain the next level as a sorcery to add its ability.)

The first artifact spell you cast each turn costs {1} less to cast.

{1}{U}: Level 2

When this Class becomes level 2, reveal cards from the top of your library until you reveal an artifact card. Put that card into your hand and the rest on the bottom of your library in a random order.

{5}{U}: Level 3

At the beginning of your end step, create a token that's a copy of target artifact you control.

Draw three cards, then put two cards from your hand on top of your library in any order.

Coldsteel Heart enters the battlefield tapped.

As Coldsteel Heart enters the battlefield, choose a color.

{T}: Add one mana of the chosen color.

{2}, {T}: Draw a card, then discard a card. Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Ebony Fly enters the battlefield tapped.

{T}: Add {C}.

{4}: Roll a d6. Until end of turn, you may have Ebony Fly become an X/X Insect artifact creature with flying, where X is the result.

Whenever Ebony Fly attacks, another target attacking creature gains flying until end of turn.

This spell costs {1} less to cast for each artifact you control.

When Emry, Lurker of the Loch enters the battlefield, mill four cards.

{T}: Choose target artifact card in your graveyard. You may cast that card this turn. (You still pay its costs. Timing rules still apply.)

If you control a commander, you may cast this spell without paying its mana cost.

Counter target noncreature spell.

Flying

When Junk Diver dies, return another target artifact card from your graveyard to your hand.

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)

Ward {4}

Whenever Kappa Cannoneer or another artifact enters the battlefield under your control, put a +1/+1 counter on Kappa Cannoneer and it can't be blocked this turn.

When Lantern of the Lost enters the battlefield, exile target card from a graveyard.

{1}, {T}, Exile Lantern of the Lost: Exile all cards from all graveyards, then draw a card.

Whenever another nontoken artifact enters the battlefield under your control, you may pay {2}. If you do, create a token that's a copy of that artifact.

{T}: Add {C}{C}{C}. Spend this mana only to cast artifact spells.

When Myr Retriever dies, return another target artifact card from your graveyard to your hand.

{T}: Add {U}.

Channel -- {3}{U}, Discard Otawara, Soaring City: Return target artifact, creature, enchantment, or planeswalker to its owner's hand. This ability costs {1} less to activate for each legendary creature you control.

Planar Atlas enters the battlefield tapped.

When Planar Atlas enters the battlefield, you may look at the top four cards of your library. If you do, reveal up to one land card from among them, then put that card on top of your library and the rest on the bottom in a random order.

{T}: Add {C}.

Whenever Scrap Trawler or another artifact you control is put into a graveyard from the battlefield, return to your hand target artifact card in your graveyard with lesser mana value.

When Simulacrum Synthesizer enters the battlefield, scry 2.

Whenever another artifact with mana value 3 or greater enters the battlefield under your control, create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control."

When Solemn Simulacrum enters the battlefield, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

When Solemn Simulacrum dies, you may draw a card.

When The Everflowing Well enters the battlefield, mill two cards, then draw two cards.

Descend 8 -- At the beginning of your upkeep, if there are eight or more permanent cards in your graveyard, transform The Everflowing Well.

(Transforms from The Everflowing Well.)

{T}: Add {U}.

Whenever you cast a permanent spell using mana produced by The Myriad Pools, up to one other target permanent you control becomes a copy of that spell until end of turn.

{T}: Add {C}.

Whenever a legendary creature enters the battlefield under your control, you may have The Irencrag become a legendary Equipment artifact named Everflame, Heroes' Legacy. If you do, it gains equip {3} and "Equipped creature gets +3/+3" and loses all other abilities.

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.

You have no maximum hand size.

At the beginning of your upkeep, put a knowledge counter on The Magic Mirror, then draw a card for each knowledge counter on The Magic Mirror.

You have no maximum hand size.

{T}: Add {C}.

You may activate abilities of creatures you control as though those creatures had haste.

{1}, {T}: Untap target creature.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I -- Urza's Saga gains "{T}: Add {C}."

II -- Urza's Saga gains "{2}, {T}: Create a 0/0 colorless Construct artifact creature token with 'This creature gets +1/+1 for each artifact you control.'"

III -- Search your library for an artifact card with mana cost {0} or {1}, put it onto the battlefield, then shuffle.

Whenever you cast an artifact spell, draw a card.

You may cast spells as though they had flash.

Sacrifice Welding Jar: Regenerate target artifact.

If you would create one or more artifact tokens, instead create those tokens plus an additional Map token. (It's an artifact with "{1}, {T}, Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery.")

{1}{U}, {T}: Create a token that's a copy of target artifact token you control.