The Battlefield

Karn, the Great Creator

$5.68

Mycosynth Lattice

$31.95

AI DraftFeb 26, 2026

Karn, the Great Creator + Mycosynth Lattice

Overview

With Mycosynth Lattice on the battlefield, every permanent becomes an artifact in addition to its other types (card text). Karn, the Great Creator’s static ability “Activated abilities of artifacts your opponents control can’t be activated” therefore prevents opponents from activating any activated abilities of their permanents while both permanents and Karn are on the battlefield. Karn’s +1 can make a noncreature permanent into an artifact creature (type-changing layered effect; see and multi-type interaction ), but that doesn’t negate Karn’s static restriction — those activated abilities still can’t be activated if the permanent is an artifact your opponent controls. Karn’s −2 loyalty ability can still fetch an artifact card you own from outside the game because Lattice’s text that makes non-battlefield cards colorless doesn’t make cards outside the battlefield into artifacts. Abilities function where they’re supposed to (e.g. loyalty abilities on the battlefield) .

Step 1

Mycosynth Lattice’s first ability makes all permanents artifacts in addition to their other types (Lattice card text).

Step 2

Karn’s static ability reads: 'Activated abilities of artifacts your opponents control can't be activated.' While Karn is on the battlefield this static ability applies to any objects that are artifacts and are controlled by Karn’s opponents.

Step 3

Because Lattice makes every permanent an artifact, every opponent’s permanent is an artifact and thus subject to Karn’s activation lock; they cannot activate activated abilities of those permanents while both effects are present.

Step 4

If you activate Karn’s +1 targeting a noncreature artifact permanent, that permanent becomes an artifact creature until your next turn. Apply type changes and power/toughness changes using the layered rules and the rule for multiple types .

Step 5

If the permanent you turned into a creature is controlled by an opponent, Karn’s static ability still prevents that opponent from activating any activated abilities of that now-artifact creature while Karn’s static effect is in place.

Step 6

Karn’s −2 loyalty ability is a loyalty ability that functions while Karn is on the battlefield ; it may reveal an artifact card you own from outside the game or a face-up artifact you own in exile and put it into your hand. Mycosynth Lattice’s effect that makes non-battlefield cards colorless does not make cards outside the battlefield into artifacts, so Karn’s −2 remains legal for fetching artifact cards you own.

Resolution

If you control Karn and Mycosynth Lattice, Karn stops opponents from activating activated abilities of any permanent they control (because Lattice makes those permanents artifacts). Karn’s +1 may turn a noncreature permanent (including lands, Auras, etc.) into an artifact creature using the normal continuous-effect layering rules and type combination rules , but the opponent still can’t activate that permanent’s activated abilities while it’s an artifact they control. Karn’s −2 may still retrieve an artifact card you own from outside the game; Lattice making non-battlefield cards colorless does not change what cards are artifact cards in zones other than the battlefield .

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