100 cards.

Vigilance trample haste beater that eats energy to attack; sac an artifact to refuel two energy and draw.

Metalcraft taps for energy, and getting energy on your turn pumps your whole team +1/+1; energy-into-aggro payoff.

Cheaper when attacked, flashes in for energy on defense, then can spread +1/+1 counters at combat for three energy.

Combat damage draws cards equal to base power; can copy a big artifact creature to draw even more.

Taps for two colorless to fuel activated abilities; the Adventure investigates X times for Clues and card flow.

Evasive against non-artifact blockers; dying artifact creatures investigate for Clues, turning attrition into cards.

Improvise lets artifacts pay for it; enters as a copy of any creature as a Synth artifact, flexible ETB and body.

Enters with two energy and lets attacking artifact creatures spend energy for +1/+1, first strike, or trample counters.

Loads energy off an opponent's nonbasics, then spends four energy on attack to blow up a land and stop blockers.

Haste attacker that banks energy or impulse-draws on attack, and burns three energy to deal 3 to any target.

Loots to add quest counters, then recasts artifact or Human spells from your graveyard up to that counter count.

Goads an opponent's creature, lets you draw off it, and adds red mana; political ramp and chip damage.

Combat damage mills and makes energy; spend energy to exile graveyard creatures and gain all their activated abilities.

Haste; gives the team +2/+2 when an artifact entered this turn, and battalion deals artifact-count damage to a player.

On attack, copies an attacking legendary creature as a tapped attacking Synth token; doubles your best bodies each combat.

Fetches a basic to the battlefield on ETB and draws a card when it dies; classic artifact ramp and value.

Taps to put a +1/+1 counter on each artifact creature you control, snowballing the artifact board fast.

Vigilance lifelink; exile it to give every artifact or Human creature indestructible, a board wipe insurance policy.

Power equals cards in hand, banks energy on ETB per artifact creature, and pays energy to draw on attack.

Gives your artifacts ward 1, and on enter or death returns an artifact card from graveyard to hand; protection plus recursion.

Trample beater that enters with four energy and on death pays energy equal to a permanent's mana value to destroy it.

Makes two flying Thopter tokens on ETB and taps two artifacts to make a creature unblockable; bodies plus evasion.

Haste; with your commander out, makes a hasty flying Thopter each combat, a steady token and artifact generator.

Counters any spell and pays you energy equal to its mana value; counterspell that fuels the energy engine.

Improvise makes it cheap; deals 5 to any target and turns excess permanent damage into Treasure tokens.

Exile target artifact and/or enchantment; flexible permanent removal for problem noncreature threats.

Taps a creature for one white, and with metalcraft exiles it instead; cheap efficient creature removal.

One mana to exile any creature; the most efficient white spot removal in the deck.

Scry 2 then draw two and bank two energy; instant-speed card draw that fuels the energy theme.

Draw three then discard two unless you pitch an artifact; deep dig that loads the graveyard for recursion.

Discard a card, draw two, and make two Treasures; refills the hand while ramping artifact mana.

Choose two modes to wipe artifacts, enchantments, or creatures by mana value; flexible asymmetric board sweeper.

Returns all artifacts and enchantments from all graveyards to the battlefield; mass artifact reanimation payoff.

Draw cards equal to the greatest artifact mana value you control; big refill in an artifact-heavy deck.

Returns all artifact cards from your graveyard to the battlefield with haste; mass artifact reanimation finisher.

Artifact creatures dealing combat damage make energy, which you spend three at a time to make 3/3 Robot tokens.

Flying Vehicle; each nontoken artifact ETB makes a 2/2 Knight that grows +2/+2 while an artifact entered this turn.

Equip for +1/+1 and energy on attack; pay two energy to coin-flip exile a blocker, combat-based removal.

Flying Vehicle whose power equals your artifact count; a cheap evasive finisher in a deck full of artifacts.

Enters with two energy, gives +3/+3 (and stays tapped), and pays energy to untap with a keyword counter.

Cast artifact and colorless spells from the top of your library and impulse the top card for life; deep extra resources.

Doubles artifact and creature ETB triggers, multiplying your energy gains and token and value triggers.

Fortified land taps grow a creature with +1/+1 counters and make Junk tokens for impulse draw; ramp into value.

Mana rock that adds any color, then gives creatures +1/+0 and indestructible, scaling with Bobbleheads; wipe insurance.

Exiles two cards face down; a matching mini-game returns them to hand, otherwise impulses extra cards over time.

Mana rock that adds any color and later draws X cards equal to Bobbleheads you control; ramp plus card draw.

Makes Food tokens, and each Food sacrificed makes a Treasure; grinds artifacts, life, and ramp over time.

Taps for any color in your commander's identity; premier two-mana fixing and ramp that triggers Madison's energy.

Multikicker scales its charge counters for repeatable colorless ramp; an artifact that triggers Madison's energy.

Equip 0 gives haste and shroud, protecting your commander and key creatures from removal and enabling fast attacks.

Taps for colorless early and sacrifices to draw a card late; flexible artifact ramp that feeds Madison's energy.

One mana for two colorless; the best ramp artifact in Commander and an instant Madison energy trigger.

Taps for colorless or R/W for a point of damage; two-mana fixing that triggers Madison's energy.

Taps for colorless or U/R for a point of damage; two-mana fixing that triggers Madison's energy.

Taps for colorless or W/U for a point of damage; two-mana fixing that triggers Madison's energy.

No maximum hand size and taps for colorless; ramp that lets you hoard cards for hand-size payoffs.

Sacrifices to fetch a basic to the battlefield; cheap artifact ramp and fixing that feeds Madison's energy.

Gives an opponent junk tokens, then taxes their attacks one mana per artifact or their creatures can't attack; a soft Fog lock.

Saga that exiles a permanent from each player, gains life and scrys, then returns two exiled cards under your control.

Saga that stuns creatures and banks energy twice, then pays any energy to dig and free-cast a card; energy payoff.

Copies an enchanted artifact each upkeep and wins the game if you control eight or more artifacts of the same name.

Draws two on ETB and gives the creature no max hand size plus +10/+10 when attacking with ten or more cards in hand.

Taps with one extra mana for UR; fixes the deck's two heaviest colors.

Taps for colorless, makes energy, and can sacrifice to destroy a nonland permanent by mana value; land-based removal and energy.

Untapped dual for R/W if you control a Mountain or Plains; fixes red and white.

Taps for any color an opponent's land could make; flexible fixing in multiplayer.

Untapped dual for W/U if you control a Plains or Island; fixes white and blue.

Tapped W/U dual that can cycle for a card when flooded; fixing with late-game flexibility.

W/U dual that enters untapped with two or more basics; fixes white and blue.

Taps with one extra mana for WU; fixes white and blue.

Taps for colorless, or any color for life if you control an artifact; near-perfect fixing in this artifact deck.

Untapped dual for U/R if you control an Island or Mountain; fixes blue and red.

Tapped W/U dual that scrys 1 on entry; fixing with a small smoothing effect.

Tapped U/R dual that scrys 1 on entry; fixing with a small smoothing effect.

Artifact land that taps for colorless and can sacrifice to make X Treasures; counts as an artifact and ramps late.

Taps for colorless or basic landcycles for a basic in hand; fixing and consistency.

Taps for colorless and sacrifices to return an artifact card from graveyard to hand; land-based artifact recursion.

Taps for any color in your commander's identity; the best untapped fixing land in Commander.

Sacrifices to fetch a basic to the battlefield tapped; fixing and shuffle effect.

Tapped; sacrifices to fetch two basics of a shared type, providing fixing and ramp.

Tapped tri-land for U, R, or W; fixes all three of the deck's colors.

Tapped; any color in commander identity and scrys when used to cast a creature sharing a type; fixing plus smoothing.

Tapped indestructible artifact land for W/U; counts as an artifact and survives board wipes.

Tapped indestructible artifact land for R/W; counts as an artifact and survives board wipes.

Tapped indestructible artifact land for U/R; counts as an artifact and survives board wipes.

Sacrifices to fetch a basic to the battlefield tapped; fixing and shuffle effect.

Basic land that taps for blue mana.

Basic land that taps for red mana.

Basic land that taps for white mana.