Izzet Generatorium — ruling 1

If you control two Izzet Generatoriums (Generatoria?), the number of {E} you get is the original number plus two. Three Izzet Generatoriums adds three to the original number, and so on.

Izzet Generatorium — ruling 2

{E} is the energy symbol. It represents one energy counter.

Izzet Generatorium — ruling 3

Energy counters are a kind of counter that a player may have. They're not associated with any specific permanents.

Izzet Generatorium — ruling 4

Keep track of how many energy counters each player has. Potential ways to track this include writing theme 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.)

Izzet Generatorium — ruling 5

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.

Izzet Generatorium — ruling 6

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.

Izzet Generatorium — ruling 7

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.

Izzet Generatorium — ruling 8

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.

Izzet Generatorium : règles, fonctionnement et interactions (MTG)

Izzet Generatorium is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

If you would get one or more (energy counters), you get that many plus one instead. : Draw a card. Activate only if you've paid or lost four or more this turn.

How it works : Izzet Generatorium

Original English text — Wizards of the Coast / Scryfall

#1June 7, 2024· Wizards of the Coast
If you control two Izzet Generatoriums (Generatoria?), the number of you get is the original number plus two. Three Izzet Generatoriums adds three to the original number, and so on.
No other card is named in this ruling.
#2June 7, 2024· Wizards of the Coast
is the energy symbol. It represents one energy counter.
No other card is named in this ruling.
#3June 7, 2024· Wizards of the Coast
Energy counters are a kind of counter that a player may have. They're not associated with any specific permanents.
No other card is named in this ruling.
#4June 7, 2024· Wizards of the Coast
Keep track of how many energy counters each player has. Potential ways to track this include writing theme 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.)
No other card is named in this ruling.
#5June 7, 2024· Wizards of the Coast
If an effect says you get one or more , you get that many energy counters. To pay one or more , 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.
No other card is named in this ruling.
#6June 7, 2024· Wizards of the Coast
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.
No other card is named in this ruling.
#7June 7, 2024· Wizards of the Coast
Some triggered abilities state that you "may pay" a certain amount of . You can't pay that amount multiple times to multiply the effect. You simply choose whether or not to pay that amount of as the ability resolves.
No other card is named in this ruling.
#8June 7, 2024· Wizards of the Coast
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.
No other card is named in this ruling.
#9June 7, 2024· Wizards of the Coast
If a spell or ability with one or more targets states that you "may pay" some amount of , and each permanent that it targets has become an illegal target, the spell or ability won't resolve. You can't pay any even if you want to.
No other card is named in this ruling.
#10June 7, 2024· Wizards of the Coast
Some spells and abilities that give you 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 .
No other card is named in this ruling.