List last 10 download with Transmission Integration

The following Trigger-based Template Sensor records the name and time of the last 10 transmission_downloaded_torrent events.

template:
  - trigger:
      - platform: event
        event_type: transmission_downloaded_torrent
    sensor:
      - name: Recent Torrent Downloads
        state: "{{ now().timestamp() | timestamp_custom() }}"
        attributes:
          downloads: >
            {% set current = this.attributes.get('downloads', []) %}
            {% set new = [{
              "name": trigger.event.data.name,
              "time": now().isoformat() }] %}
            {{ (new + current)[:10] }}

You can use a Markdown Card to display the download events using the following template:

|Name||Time|
|:----|:-:|:----|
{% for x in state_attr('sensor.recent_torrent_downloads', 'downloads') | default([], true) -%}
  |{{x.name}}||{{x.time|as_timestamp|timestamp_custom}}|
{% endfor -%}

Let me know if you need any additional assistance.