Sentry Bot
Artifact Creature — Robot
Flash
This spell costs 
less to cast for each creature attacking you.
When this creature enters, you get 
for each creature attacking you.
At the beginning of combat on your turn, you may pay . If you do, put a +1/+1 counter on each creature you control.
- CMC
- 5
- Mana cost
- Color identity
- W
- Rarity
- rare
- Set
- Fallout
- Price
- —
- EDHREC rank
- #9313
Sentry Bot puts a vigilant, indestructible wall in front of you while tapping down an opponent's biggest threat every turn — that combination of defense and soft-lock pressure is genuinely rare on a single card. The cost is real: five mana for a 0/6 that never swings in means you're buying time, not closing games, and Liberty Prime, Recharged is the natural home because it actually rewards that defensive posture.
Best Commanders
Commanders with the highest synergy
Liberty Prime, Recharged
Liberty Prime, Recharged turns Sentry Bot's tap ability into a political weapon — keeping the table's largest threat locked down while Liberty Prime threatens to swing for lethal means opponents have to answer two problems at once.
Dr. Madison Li
Dr. Madison Li tutors artifacts into play and rewards artifact density, so Sentry Bot slots in as both a defensive piece and a reliable tap trigger that fuels the broader artifact synergy engine Dr. Madison Li is assembling.
Satya, Aetherflux Genius
Satya, Aetherflux Genius copies artifacts and blinks them out at end of turn, which conveniently resets Sentry Bot's tap ability — a fresh copy enters untapped each combat, turning one tap-down into a repeatable per-turn lock on any creature your opponents control.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | not legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Sentry Bot is a Commander card through and through — the tap-down effect is designed for a multiplayer table where neutralizing one player's finisher for several turns is meaningful leverage. In Legacy and Vintage, where it's technically legal, a five-mana 0/6 with no immediate board impact doesn't survive contact with the format's tempo demands. Oathbreaker follows similar multiplayer logic to Commander, so the same defensive value applies there at a smaller scale. Anywhere with a 60-card, one-on-one baseline, Sentry Bot is too slow and too passive to matter.
Key Combos
Combo lines featuring this card
Price Context
Current price
unknown tier
Pricing data for Sentry Bot isn't available at the moment, so check Scryfall or TCGPlayer for a current figure. Given its narrow Commander-specific role and the Universes Beyond print run it came from, it typically sits in the budget-to-low-mid range — worth confirming before you trade for one.
Explore
Sources
Mentioned
- Liberty Prime, Recharged
- Dr. Madison Li
- Satya, Aetherflux Genius
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.