Tangletrove Kelp — ruling 1

If a Clue you control is already a creature when Tangletrove Kelp’s second ability resolves, Tangletrove Kelp’s second ability will overwrite any previous effects that set that creature’s power and toughness to specific numbers. Effects that otherwise modify its power and toughness will still apply no matter when they took effect. The same is true for +1/+1 counters.

Tangletrove Kelp — ruling 2

Clues you control will keep any abilities they previously had while they’re creatures.

Tangletrove Kelp — ruling 3

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.

Tangletrove Kelp — ruling 4

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.

Tangletrove Kelp — ruling 5

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.

Tangletrove Kelp — ruling 6

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.

Tangletrove Kelp — ruling 7

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.

Tangletrove Kelp : règles, fonctionnement et interactions (MTG)

Tangletrove Kelp 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

Ward At the beginning of each combat, other Clues you control become 6/6 Plant creatures in addition to their other types until end of turn. , Sacrifice this creature: Draw a card.

How it works : Tangletrove Kelp

Original English text — Wizards of the Coast / Scryfall

#1February 2, 2024· Wizards of the Coast
If a Clue you control is already a creature when Tangletrove Kelp’s second ability resolves, Tangletrove Kelp’s second ability will overwrite any previous effects that set that creature’s power and toughness to specific numbers. Effects that otherwise modify its power and toughness will still apply no matter when they took effect. The same is true for +1/+1 counters.
No other card is named in this ruling.
#2February 2, 2024· Wizards of the Coast
Clues you control will keep any abilities they previously had while they’re creatures.
No other card is named in this ruling.
#3February 2, 2024· 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.
No other card is named in this ruling.
#4February 2, 2024· 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.
No other card is named in this ruling.
#5February 2, 2024· 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.
No other card is named in this ruling.
#6February 2, 2024· 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.
No other card is named in this ruling.
#7February 2, 2024· 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.
No other card is named in this ruling.