Ray Fillet wants a deck that saves up energy and spends it on stronger effects. It also works in a deck built around Fish or Mutants.
Mana cost
Blue ()
Power / toughness3 / 3
RarityUncommon
Flying
When Ray Fillet enters, create a Mutagen token. (It's an artifact with ", , Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery.")
, Remove a +1/+1 counter from a creature you control: Draw a card.
Picked for what they do in Ray Fillet's deck. When two cards do the same job, the one with the lower comes first. All of them fit Ray Fillet's color identity.Mana ValueThe total amount of mana a card costs, all added up. A card costing two generic and one green has a mana value of three. Wizards renamed this from "converted mana cost" in 2021, so older cards and articles may still use the old name.Open the full glossary
explain how Ray Fillet works in tricky situations. They come from Wizards of the Coast, the company that makes Magic.RulingThe official answer to how a card works in a tricky situation. Most rulings are written by Wizards of the Coast, the company that makes Magic, and a few are notes from Scryfall, the card database Magic players use. A ruling explains a card. It does not change what the card says.Open the full glossary
Wizards of the Coast27 Jan 2026
Mutagen tokens are a kind of predefined token. Each one is a colorless artifact with the artifact subtype Mutagen and the ability "{1}, {T}, Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery."
Wizards of the Coast27 Jan 2026
Some spells and abilities that create Mutagen tokens require targets. If each target chosen is an illegal target as that spell or ability tries to resolve, it won't resolve. The Mutagen token won't be created.
Color identityEvery color of mana symbol on a card, in its cost and in its rules text. Your commander's color identity sets the limit for your whole deck: every other card has to fit inside it. A deck led by a green and white commander cannot play a card with any blue in its color identity.Open the full glossaryUPlayers write colors as letters: U for blue. Blue is U because B was already taken by black.EnergyEnergy decks collect energy counters, a resource you save up across turns, then spend them on stronger effects. Energy belongs to you, not to any card, so losing your cards does not take it away.Open the Energy pageCounter ManipulationAdds, moves or multiplies counters already on permanents. It works on any kind (+1/+1, loyalty, charge), so the same card can serve very different decks. Karn's Bastion, Doubling SeasonOpen the Counter Manipulation pageETB ValueDoes something useful the moment it arrives: an enter the battlefield ability, which players shorten to ETB. You keep that effect even if the card is removed straight afterwards, which is why these pair so well with flicker cards that make them enter again. Solemn Simulacrum, The One RingOpen the ETB Value pageToken MakerCreates one or more tokens. Different cards make very different ones: creatures Grave Titan, Treasures Smothering Tithe, Clues Tireless Tracker or Food Gilded Goose. This is one of our largest tags, so pair it with an archetype or theme when you are hunting a specific kind.Open the Token Maker pageMana SinkGives you somewhere useful to spend spare mana, usually through an ability you can activate again and again. Rogue's Passage, Mind StoneOpen the Mana Sink pageDrawDraws you extra cards. More cards means more choices every turn, and in a 100-card deck it is the main way to find the pieces you need. Rhystic Study, SkullclampOpen the Draw page
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, 
, Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery.")
, Remove a +1/+1 counter from a creature you control: Draw a card.
Open the full glossary
