Robobrain War Mind
Artifact Creature — Robot
When this creature enters, you get an amount of (energy counters) equal to the number of artifact creatures you control.
Whenever this creature attacks, you may pay . If you do, draw a card.
Legal in
Legacy, Vintage, Commander
Rulings (11)
Use the number of artifact creatures you control when Robobrain War Mind's second ability resolves, including Robobrain War Mind itself if it's still on the battlefield, to determine the number of energy counters you get.
2024-03-08
is the energy symbol. It represents one energy counter.
2024-03-08
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.
2024-03-08
Some triggered abilities that state that you "may pay" a certain amount of 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.
2024-03-08