Passive + Active.
Passive: permanently increases the level of all allied couriers by 3 and hero attacks to kill the courier by 1 (so Marci's team starts with flying couriers).
Active: Marci whistles and instantly teleports her courier to her location. Reworked delivery logic:
If the courier is in the fountain when Special Delivery is cast, it takes all items from the stash before teleporting.
The courier then automatically attempts to transfer items upon arrival, then heads back to the fountain.
If the courier still has any extra items after the transfer attempt — or didn't transfer anything — it stays next to Marci instead of returning.
Cast Point: 1s. Cooldown: 245s − 5s per level (was a flat 240s).