Most cards of this nature are balanced by only allowing them to use their effect when questing, but Hiram Flaversham has the rare ability to use it when he's played
Use the power and toughness of the creature from when it was last on the battlefield to determine the power and toughness of the tokens
Best Prevent All Damage Payoffs A primary use of these cards, specifically the non-Fog varieties that prevent noncombat damage, is protecting your board from a variety of board wipes
Goliath also has some amazing artwork that completely differentiates it from the regular version of the card, evoking a completely different emotion and making the card art shine
Then, you draw a card for each counter on it when it enters the battlefield, all but guaranteeing you get to refill your hand or even draw extra cards if you can load it up with enough counters
One thing I'm curious about, however, is how lore accurate these commanders are