The trigger event doesn't have to specifically refer to "creatures." In these cases, the trigger event may also refer to something being "put into a graveyard from the battlefield." For example, an ability that triggers "whenever an artifact is put into a graveyard from the battlefield" would trigger twice if an artifact creature dies while Drivnod, Carnage Dominus is on the battlefield
Each collector booster display box (pictured above) contains 12 individual booster packs
That's a pretty solid worst-case scenario
No, kicker is not a triggered ability, it's an additional cost
Its abilities counting itself pushes this way over the top
I expect to invest my July 9th column about why Golos is, in my opinion, yet another example of a badly designed Commander and I'll make the case for why I believe that Golos and similar cards are wrong for the format.