Rukarumel, Biologist 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.
01
Official card text
As Rukarumel enters, choose a creature type. Slivers you control and nontoken creatures you control are the chosen type in addition to their other creature types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.,
: Create a 1/1 colorless Sliver creature token.
How it works : Rukarumel, Biologist
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
To choose a creature type, you must choose an existing creature type, such as Vampire or Knight. You can't choose multiple creature types, such as "Vampire Knight." Card types such as artifact can't be chosen, nor can subtypes that aren't creature types, such as Jace, Vehicle, or Treasure.
No other card is named in this ruling.
- #2· Wizards of the Coast
Replacement effects that modify creatures of a certain type as they enter will apply after you apply this effect. For example, if Warrior is the chosen creature type and you control Bramblewood Paragon, a Runeclaw Bear would enter the battlefield with an additional +1/+1 counter.
No other card is named in this ruling.
02
Popular combos
Real combos played by the community, sorted by popularity.
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#1
The World Tree + Rukarumel, Biologist
Put all creature cards from your library onto the battlefield
- 1Activate The World Tree's second ability by paying
, tapping and sacrificing it, causing you to search for all creatures in your library, as they are all Gods due to Rukarumel and put them onto the battlefield.
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#2
Realmbreaker, the Invasion Tree + Rukarumel, Biologist
Put all creature cards from your library onto the battlefield
- 1Activate Realmbreaker's second ability by paying
, tapping and sacrificing it, causing you to search for all creatures in your library, as they are all Praetors due to Rukarumel, and put them onto the battlefield.
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#3
Rukarumel, Biologist + Intruder Alarm
Infinite creature tokensInfinite creature ETBInfinite mana creatures you control can produceInfinite untap of creatures
- 1Activate all mana-producing creatures by tapping them, adding at least .
- 2Activate Rukarumel by paying and tapping it, creating a 1/1 Sliver creature token.
- 3When the Sliver enters the battlefield, Intruder Alarm triggers, untapping all creatures.
- 4Repeat.
- 5If creatures you control can tap to produce at least
, this combo nets infinite mana.
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#4
Hatchery Sliver + Memnite + Rukarumel, Biologist
Infinite artifact ETBInfinite creature ETBInfinite creature tokens
- 1Cast Memnite by paying
, and choosing to pay its replicate cost an arbitrarily large number of times by paying . - 2Memnite triggers, creating a copy of it for each time its replicate cost was paid.
- 3Resolve all Memnite spells, causing the nontoken Memnite to enter the battlefield, and creating a token copy of it for each time its replicate cost was paid.
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#5
Wirewood Symbiote + Rukarumel, Biologist
Infinite creature LTBInfinite creature ETBInfinite storm count
- 1Activate a creature by tapping it, adding at least .
- 2Activate Wirewood Symbiote by returning it from the battlefield to your hand, untapping the mana-producing creature.
- 3Cast Wirewood Symbiote by paying .
- 4Repeat.
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#6
Hatchery Sliver + Ornithopter + Rukarumel, Biologist
Infinite artifact ETBInfinite creature ETBInfinite creature tokens
- 1Cast Ornithopter by paying , and choosing to pay its replicate cost an arbitrarily large number of times by paying .
- 2Ornithopter triggers, creating a copy of it for each time its replicate cost was paid.
- 3Resolve all Ornithopter spells, causing the nontoken Ornithopter to enter the battlefield, and creating a token copy of it for each time its replicate cost was paid.
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#7
Magda, Brazen Outlaw + Aphetto Alchemist + Rukarumel, Biologist
Infinite artifact ETBInfinite artifact LTBInfinite artifact sacrifice triggersInfinite artifact tokens
- 1Activate Aphetto Alchemist by tapping it, targeting itself.
- 2Magda triggers, creating a Treasure token.
- 3Resolve the Aphetto Alchemist ability, untapping it.
- 4Repeat.
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#8
Rukarumel, Biologist + Scuttling Sliver + Basal Sliver + Training Grounds
Infinite creature ETBInfinite creature LTBInfinite death triggersInfinite creature sacrifice triggers
- 1Activate Rukarumel by paying
due to Training Grounds and tapping it, creating a 1/1 Sliver creature token. - 2Activate the Sliver token using the ability granted to it by Basal Sliver by sacrificing it, adding .
- 3Activate Rukarumel using the ability granted to it by Scuttling Sliver by paying
, untapping Rukarumel. - 4Repeat.
Related cards and tokens
03
Legal formats
legacyvintagecommanderoathbreakerduel
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