CREATE TABLE table_204_427 (id DECIMAL, "creature  ( other planes ) " TEXT, "page" TEXT, "other appearances" TEXT, "variants" TEXT, "description" TEXT)

what creature is after basilisk ?
SELECT "creature (other planes)" FROM table_204_427 WHERE id = (SELECT id FROM table_204_427 WHERE "creature (other planes)" = 'basilisk') + 1
SELECT "creature (other planes)" FROM "table_204_427" WHERE "id" = (SELECT "id" FROM "table_204_427" WHERE "creature (other planes)" = 'basilisk') + 1