Why bother looking up new monsters when you can just double the amount of goblins-per-encounter each time the players level up?
I did the math and a deadly encounter for 20th level characters would be 127 goblins.
That’s a lot of goblins.
the party: so what’s the encounter today?
me, pouring over a hundred (100) warhammer figures onto my map behind the dm screen: it might be a dragon
the big villain of the campaign is a Colossal red dragon suit operated by 2,350 goblins
a tarrasque thats actually a mech operated by 4k goblins