+1 stealth action.
Put the Diary in play, or add a counter to one in play. When a unique minion in play is burned, add another counter. While this card has seven or more counters, Giovanni get [NEC] and may take a +1 stealth action to put a minion from any ash heap into play to represent a wraith ally with 2 life, 0 strength, 1 bleed and +1 stealth.