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Rules guide · Legendary Creature

Lonis, Genetics ExpertHow it works & interactions with other cards

By the ManaCount desk· 6 min read· Ravnica: Clue Edition· February 23, 2024
Carte Magic Lonis, Genetics Expert

Lonis, Genetics Expert 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

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) Whenever one or more +1/+1 counters are put on Lonis, investigate that many times. Whenever you sacrifice a Clue, put a +1/+1 counter on another target creature you control.

How it works : Lonis, Genetics Expert

Original English text — Wizards of the Coast / Scryfall

  1. #1· Wizards of the Coast

    When comparing the stats of the two creatures for evolve, you always compare power to power and toughness to toughness.

    No other card is named in this ruling.

  2. #2· Wizards of the Coast

    Whenever a creature enters the battlefield under your control, check its power and toughness against the power and toughness of the creature with evolve. If neither stat of the new creature is greater, evolve won't trigger at all.

    No other card is named in this ruling.

  3. #3· Wizards of the Coast

    If evolve triggers, the stat comparison will happen again when the ability tries to resolve. If neither stat of the new creature is greater, the ability will do nothing. If the creature that entered the battlefield leaves the battlefield before evolve tries to resolve, use its last known power and toughness to compare the stats.

    No other card is named in this ruling.

  4. #4· Wizards of the Coast

    If a creature enters the battlefield with +1/+1 counters on it, consider those counters when determining if evolve will trigger. For example, a 1/1 creature that enters the battlefield with two +1/+1 counters on it will cause the evolve ability of a 2/2 creature to trigger.

    No other card is named in this ruling.

  5. #5· Wizards of the Coast

    If multiple creatures enter the battlefield at the same time, evolve may trigger multiple times, although the stat comparison will take place each time one of those abilities tries to resolve. For example, if you control a 2/2 creature with evolve and two 3/3 creatures enter the battlefield, evolve will trigger twice. The first ability will resolve and put a +1/+1 counter on the creature with evolve. When the second ability tries to resolve, neither the power nor the toughness of the new creature is greater than that of the creature with evolve, so that ability does nothing.

    No other card is named in this ruling.

  6. #6· Wizards of the Coast

    When comparing the stats as the evolve ability resolves, it's possible that the stat that's greater changes from power to toughness or vice versa. If this happens, the ability will still resolve and you'll put a +1/+1 counter on the creature with evolve. For example, if you control a 2/2 creature with evolve and a 1/3 creature enters the battlefield under your control, it toughness is greater so evolve will trigger. In response, the 1/3 creature gets +2/-2. When the evolve trigger tries to resolve, its power is greater. You'll put a +1/+1 counter on the creature with evolve.

    No other card is named in this ruling.

  7. #7· Wizards of the Coast

    Clue is an artifact type. Even though it appears on some cards with other permanent types, it's never a creature type, a land type, or anything but an artifact type.

    Card named in this ruling

  8. #8· Wizards of the Coast

    If an effect refers to a Clue, it means any Clue artifact, not just a Clue artifact token. For example, you can sacrifice Wrench to pay for Alquist Proft, Master Sleuth's activated ability.

    Card named in this ruling

  9. #9· Wizards of the Coast

    You can't sacrifice a Clue to pay multiple costs. For example, you can't sacrifice a Clue token to activate its own ability and also to activate Alquist Proft, Master Sleuth's ability.

    Card named in this ruling

  10. #10· Wizards of the Coast

    Some spells and abilities that investigate 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 create any Clue tokens.

    Card named in this ruling

  11. #11· Wizards of the Coast

    Some abilities trigger "whenever you sacrifice a Clue". Those abilities trigger whenever you sacrifice a Clue for any reason, not just to activate a Clue's activated ability.

    Card named in this ruling

02

Popular combos

Real combos played by the community, sorted by popularity.

Lonis, Genetics Expert
+Krark-Clan Ironworks
#1

Lonis, Genetics Expert + Krark-Clan Ironworks

Infinite +1/+1 counters on a creature
  1. 1Activate Krark-Clan Ironworks by sacrificing a Clue, adding {C}{C}.
  2. 2Lonis' second ability triggers, putting a +1/+1 counter on the Spike.
  3. 3Activate the Spike by paying {2} and removing a +1/+1 counter from it, putting a +1/+1 counter on Lonis.
  4. 4Lonis' first ability triggers, creating a Clue artifact token.
  5. 5Repeat.
Lonis, Genetics Expert
+Piper Wright, Publick Reporter
+Krark-Clan Ironworks
#2

Lonis, Genetics Expert + Piper Wright, Publick Reporter + Krark-Clan Ironworks

Infinite colorless manaInfinite card drawInfinite draw triggersInfinite +1/+1 counters on creatures you control
  1. 1Activate Krark-Clan Ironworks by sacrificing a Clue, adding {C}{C}.
  2. 2Lonis' third ability and Piper Wright's second abilities trigger.
  3. 3Resolve the Lonis trigger, putting a +1/+1 counter on any other creature you control.
  4. 4Resolve the Piper Wright trigger, putting a +1/+1 counter on Lonis.
  5. 5Lonis' second ability triggers, creating a Clue artifact token.
  6. 6Repeat.
Lonis, Genetics Expert
+Extruder
#3

Lonis, Genetics Expert + Extruder

Infinite +1/+1 counters on creatures you control
  1. 1Activate Extruder by sacrificing another artifact.
  2. 2If the artifact was a Clue, Lonis' second ability triggers, putting a +1/+1 counter on another creature you control.
  3. 3Resolve the Extruder ability, putting a +1/+1 counter on Lonis.
  4. 4Lonis' first ability triggers, creating a Clue aritfact token.
  5. 5Repeat.
Lonis, Genetics Expert
+Jenny Flint
+Peregrin Took
#4

Lonis, Genetics Expert + Jenny Flint + Peregrin Took

Near-infinite artifact ETBNear-infinite artifact LTBNear-infinite artifact sacrifice triggersNear-infinite artifact tokens
  1. 1Activate Peregrin Took by sacrificing three Foods.
  2. 2Jenny Flint triggers three times.
  3. 3Resolve the first Jenny Flint trigger, putting a +1/+1 counter on Lonis.
  4. 4Lonis's first ability triggers, creating a Clue and Food token due to Peregrin Took.
  5. 5Repeat from step 3 for the remaining triggers.
  6. 6Resolve the Peregrin Took ability from step 1, causing you to draw a card.
  7. 7Repeat.
Lonis, Genetics Expert
+Yotian Dissident
#5

Lonis, Genetics Expert + Yotian Dissident

Infinite artifact tokensInfinite Clue tokensInfinite +1/+1 counters on creatures you control
  1. 1Put a +1/+1 counter on Lonis.
  2. 2Lonis' first ability triggers, creating a Clue artifact token.
  3. 3When the Clue enters the battlefield, Yotian Dissident triggers, putting a +1/+1 counter on Lonis.
  4. 4Repeat from step 2.
Lonis, Genetics Expert
+Rosie Cotton of South Lane
#6

Lonis, Genetics Expert + Rosie Cotton of South Lane

Infinite artifact tokensDraw the gameInfinite +1/+1 counters on a creatureInfinite Clue tokens
  1. 1Cast Rosie by paying {2}{W}.
  2. 2When Rosie enters the battlefield, its first ability triggers, creating a Food artifact token.
  3. 3Rosie's second ability triggers, putting a +1/+1 counter on Lonis.
  4. 4Lonis' second ability triggers, creating a Clue artifact token.
  5. 5Repeat from step 3.
Lonis, Genetics Expert
+Tarrian's Soulcleaver
+Krark-Clan Ironworks
#7

Lonis, Genetics Expert + Tarrian's Soulcleaver + Krark-Clan Ironworks

Infinite artifact ETBInfinite artifact LTBInfinite artifact sacrifice triggersInfinite colorless mana
  1. 1Activate Krark-Clan Ironworks by sacrificing a Clue, adding {C}{C}.
  2. 2Lonis' second ability and Tarrian's Soulcleaver trigger.
  3. 3Resolve the Lonis trigger, putting a +1/+1 counter on any other creature you control.
  4. 4Resolve the Tarrian's Soulcleaver trigger, putting a +1/+1 counter on Lonis.
  5. 5Lonis' first ability triggers, creating a Clue artifact token.
  6. 6Repeat.
Lonis, Genetics Expert
+Tarrian's Soulcleaver
+Cryptic Trilobite
#8

Lonis, Genetics Expert + Tarrian's Soulcleaver + Cryptic Trilobite

Infinite card drawInfinite draw triggersNear-infinite +1/+1 counters on a creature
  1. 1Activate a Clue by paying {2} and sacrificing it.
  2. 2Lonis' second ability and Tarrian's Soulcleaver trigger.
  3. 3Resolve the Lonis trigger, putting a +1/+1 counter on Cryptic Trilobite.
  4. 4Resolve the Tarrian's Soulcleaver trigger, putting a +1/+1 counter on Lonis.
  5. 5Lonis' first ability triggers, creating a Clue artifact token.
  6. 6Resolve the Clue ability from step 1, causing you to draw a card.
  7. 7Activate Cryptic Trilobite's first ability by removing a +1/+1 counter from it, adding {C}{C} that can only be spent to activate abilities.
  8. 8Repeat.

Related cards and tokens

03

Legal formats

legacyvintagecommanderoathbreakerdueltlr
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Official source