diff --git a/CLAUDE.md b/CLAUDE.md
index d10aff4..9c8af8c 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -78,7 +78,7 @@ This is the backend API for Ashes.live, a fan-developed deckbuilder and communit
 2. Rebuild the container: `make build`
 
 ### Database Migrations
-1. Create the migration: `make migration-new ARGS='DESCRIPTION HERE'`
+1. Create the migration: `make migrate-new ARGS='DESCRIPTION HERE'`
 2. Review generated migration file to ensure no unexpected changes
 3. Execute the migration: `make migrate`
 
diff --git a/api/schemas/cards.py b/api/schemas/cards.py
index 33bf597..a172719 100644
--- a/api/schemas/cards.py
+++ b/api/schemas/cards.py
@@ -141,6 +141,7 @@ class CardOut(BaseModel):
     copies: int | None = None
     effectRepeats: bool | None = None
     is_legacy: bool | None = None
+    chained: bool | None = None
 
 
 class CardUpdate(BaseModel):
@@ -171,6 +172,7 @@ class CardUpdate(BaseModel):
     recover: Annotated[str | int | None, BeforeValidator(str_or_int)] = None
     spellboard: int | None = None
     copies: int | None = None
+    chained: bool | None = False
 
 
 class CardUsageCounts(BaseModel):
diff --git a/api/views/cards.py b/api/views/cards.py
index 5cd2c3f..71290c6 100644
--- a/api/views/cards.py
+++ b/api/views/cards.py
@@ -490,10 +490,10 @@ def update_card(
             card.alt_dice_flags = 0
             del json_data["altDice"]
     # Update JSON-only data that doesn't need parsing
-    for prop in ("magicCost", "effectMagicCost", "effectRepeats"):
+    for prop in ("magicCost", "effectMagicCost", "effectRepeats", "chained"):
         update_value = getattr(data, prop)
         if update_value is not None and update_value != json_data.get(prop):
-            if update_value:
+            if update_value or update_value == 0:
                 json_data[prop] = update_value
             elif prop in json_data:
                 del json_data[prop]
@@ -501,7 +501,7 @@ def update_card(
     for prop in ("attack", "life", "recover", "battlefield", "spellboard"):
         update_value = getattr(data, prop)
         if update_value is not None and update_value != json_data.get(prop):
-            if update_value:
+            if update_value or update_value == 0:
                 json_data[prop] = str_or_int(update_value)
             elif prop in json_data:
                 del json_data[prop]
diff --git a/migrations/versions/2025-08-24_add_card_chains_489f5ba99de2.py b/migrations/versions/2025-08-24_add_card_chains_489f5ba99de2.py
new file mode 100644
index 0000000..d18ab2e
--- /dev/null
+++ b/migrations/versions/2025-08-24_add_card_chains_489f5ba99de2.py
@@ -0,0 +1,49 @@
+"""Add card chains
+
+Revision ID: 489f5ba99de2
+Revises: b5e78986c4b6
+Create Date: 2025-08-24 15:46:54.114706+00:00
+
+"""
+
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = "489f5ba99de2"
+down_revision = "b5e78986c4b6"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # Update all cards with default chain status
+    op.execute(
+        """
+        UPDATE card SET "json" = "json" || '{"chained": false}'::jsonb
+        WHERE is_legacy = FALSE
+        """
+    )
+    op.execute(
+        """
+        UPDATE card SET "json" = "json" || '{"chained": true}'::jsonb
+        WHERE is_legacy = FALSE AND stub IN (
+            'explosive-growth',
+            'golden-veil',
+            'hypnotize',
+            'psychic-vampire',
+            'river-skald',
+            'summon-shining-hydra',
+            'meteor'
+        )
+        """
+    )
+
+
+def downgrade():
+    op.execute(
+        """
+        UPDATE card SET "json" = "json" - 'chained'
+        WHERE is_legacy = FALSE
+        """
+    )