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Commander Nexus
  1. Commander Nexus
  2. Commanders
  3. Splinter, the Mentor

Command zone

Splinter, the Mentor

Splinter, the Mentor

Legendary Creature — Mutant Ninja Rat

Splinter wants a deck that makes an army of small creatures and attacks with all of them. It has partner, so it can share the lead with a second partner commander.

  • Mana cost1 genericblack
  • Black ()
  • Power / toughness2 / 2
  • RarityMythic

Menace

Whenever Splinter or another nontoken creature you control leaves the battlefield, create a Mutagen token.

Partner—Character select (You can have two commanders if both have this ability.)

Build a deck with Splinter Find it in the app

Archetypes
Themes

Cards That Fit Splinter, the Mentor

Picked for what they do in Splinter's deck. When two cards do the same job, the one with the lower comes first. All of them fit Splinter'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.Sol RingOpen the full glossary

plan6

The 6 Cards

Does what Splinter, the Mentor does6

The 6 Cards

Rulings for Splinter, the Mentor

explain how Splinter 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 Coast 27 Jan 2026

An effect that checks whether you control your commander is satisfied if you control one or both of your two commanders.

Wizards of the Coast 27 Jan 2026

Both commanders start in the command zone, and the remaining 98 cards of your deck are shuffled to become your library.

Wizards of the Coast 27 Jan 2026

If something refers to your commander while you have two commanders, it refers to one of them of your choice. If you are instructed to perform an action on your commander (e.g. put it from the command zone into your hand due to Command Beacon), you choose one of your commanders at the time the effect happens.

Wizards of the Coast 27 Jan 2026

If your Commander deck has two commanders, you can only include cards whose own color identities are also found in your commanders' combined color identities. If Donatello, the Brains and Splinter, the Mentor are your commanders, your deck may contain cards with blue and/or black in their color identity, but not cards with red, green, or white. (If Leonardo, the Balance is one of your commanders, your deck may contain cards with any color or combination of colors in their color identity, regardless of who your other commander is.)

Wizards of the Coast 27 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 Coast 27 Jan 2026

Once the game begins, your two commanders are tracked separately. If you cast one, you won't have to pay an additional {2} the first time you cast the other. A player loses the game after having been dealt 21 damage from any one of them, not from both of them combined.

Wizards of the Coast 27 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.

Wizards of the Coast 27 Jan 2026

To have two commanders, both must have appropriate partner abilities as the game begins. Losing the ability during the game doesn't cause either to cease to be your commander.

Wizards of the Coast 27 Jan 2026

You can have two commanders if each one has "Partner—Character select." You can't mix and match them with cards that have other partner abilities.

9 rulings, all written by Wizards of the Coast. Read the originals on Gatherer ↗

Similar Commanders

Commanders that share the most with Splinter, and what they share.

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 glossaryBPlayers write colors as letters: B for black.TokensToken decks fill the battlefield with small creatures made by their cards, then attack with all of them or make them all bigger at once. A token is a creature (or other object) that a card creates, not a card from your deck.Open the Tokens pageToken EngineMakes tokens again and again rather than once. A token is a creature or other permanent created by a card, with no card of its own. Something that makes one token gives you a body; something that makes them every turn gives you a board you can keep rebuilding after it is cleared. Grave Titan, Bitterblossom, OphiomancerOpen the Token Engine 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 pageEvasionAn ability that makes a creature hard to block, so its attacks reach the player. Flying, menace, landwalk and plain 'can't be blocked' are the common kinds.Open the Evasion page