Cheapest priced copy (Commander Legends): $0.35 at Card Kingdom, near mint, their price list as of .
Mindless Automaton 
Artifact Creature — Construct · 0/0 · Rare · Exodus · #135
This creature enters with two +1/+1 counters on it.
{1}, Discard a card: Put a +1/+1 counter on this creature.
Remove two +1/+1 counters from this creature: Draw a card.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
6 printings · $0.35 to $12.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends | 326 | Uncommon | $0.35 | $0.49 |
| Eternal Masters | 227 | Uncommon | $0.49 | $0.99 |
| Edge of Eternities Commander | 142 | Uncommon | $0.35 | — |
| Exodus | 135 | Rare | $0.69 | — |
| March of the Machine Commander | 365 | Uncommon | $0.35 | — |
| Time Spiral Timeshifted | 111 | Special | $0.59 | $12.99 |
One ruling from Wizards of the Coast
- 10 November 2020If removing two +1/+1 counters from Mindless Automaton causes the amount of damage already marked on Mindless Automaton to be equal to or greater than its toughness, it will be put into its owner's graveyard as a state-based action before the ability can be activated again and before the card is drawn.