Magic the Gathering Card - Sentry Bot - MTG Circle

Sentry Bot

Magic the Gathering mana symbolMagic the Gathering mana symbol
Artifact Creature — Robot

Flash

This spell costs Magic the Gathering mana symbol less to cast for each creature attacking you.

When this creature enters, you get Magic the Gathering mana symbol for each creature attacking you.

At the beginning of combat on your turn, you may pay Magic the Gathering mana symbolMagic the Gathering mana symbolMagic the Gathering mana symbol. If you do, put a +1/+1 counter on each creature you control.

qAnthony Devine
standard
Not Legal
alchemy
Not Legal
pioneer
Not Legal
explorer
Not Legal
modern
Not Legal
historic
Not Legal
standard brawl
Not Legal
historic brawl
Not Legal
timeless
Not Legal

Rulings

The cost-reduction ability of Sentry Bot doesn’t change its mana cost or mana value, only the total cost you pay. Specifically, the mana value of Sentry Bot is always 5.
(wotc2024-03-08)
Some spells and abilities that give you {E} may require targets. If each target chosen is an illegal target as that spell or ability tries to resolve, it won’t resolve. You won’t get any {E}.
(wotc2024-03-08)
Once you announce that you’re casting Sentry Bot, no player may take actions until you’re done casting it. Notably, opponents can’t remove creatures from combat to try to change Sentry Bot’s total cost.
(wotc2024-03-08)
Some triggered abilities that state that you “may pay” a certain amount of {E} describe an effect that happens “If you do.” In that case, no player may take actions to try to stop the ability’s effect after you make your choice. If the payment is followed by the phrase “When you do,” then you’ll choose any targets for that reflexive triggered ability and put it on the stack before players can take actions.
(wotc2024-03-08)
Keep track of how many energy counters each player has. Potential ways to track this include writing them down on paper or using dice, but any method that is clear and mutually agreeable is fine. (At higher levels of tournament play, dice may not be allowed for tracking counters that players have.)
(wotc2024-03-08)
If a spell or ability with one or more targets states that you “may pay” some amount of {E}, and each permanent that it targets has become an illegal target, the spell or ability won’t resolve. You can’t pay any {E} even if you want to.
(wotc2024-03-08)
Use the number of creatures attacking you as Sentry Bot’s third ability resolves to determine the number of energy counters you get.
(wotc2024-03-08)
Some triggered abilities state that you “may pay” a certain amount of {E}. You can’t pay that amount multiple times to multiply the effect. You simply choose whether or not to pay that amount of {E} as the ability resolves.
(wotc2024-03-08)
Energy counters are a kind of counter that a player may have. They’re not associated with any specific permanents.
(wotc2024-03-08)
If an effect says you get one or more {E}, you get that many energy counters. To pay one or more {E}, you lose that many energy counters. You can’t pay more energy counters than you have. Any effects that interact with counters a player gets, has, or loses can interact with energy counters.
(wotc2024-03-08)
Energy counters aren’t mana. They don’t go away as steps, phases, and turns end, and effects that add mana “of any type” can’t give you energy counters.
(wotc2024-03-08)
{E} is the energy symbol. It represents one energy counter.
(wotc2024-03-08)
logo

By joining our community, you can immerse yourself in MTG Arena gameplay. Watch matches, engage with content, comment, share thoughts, and rate videos for an interactive experience.

Follow Us

LATEST VIDEOS