You can play it in Commander as well, where its occasionally used in top dragon Commander decks with heavy hitters like Lathliss, Dragon Queen and Archwing Dragon
Vensers Journal is probably the most impactful of these colorless hand size changers, due to the massive lifegain over the course of those long-drawn-out EDH games, and is often found in control decks
Keyword counters and Shield counters work too, as well as any other hyper-specific counters you can shuffle onto Hancock via The Ozolith et al
While many BG decks combine beefy green cards and strong black removal to trample the opposition, other decks create big monsters by slowly feeding their graveyards or just profit from great sacrifices
Ignore any alternative costs, additional costs, cost increases, or cost reductions that could apply to it