There are status effects and specials, but everything complex is handled by the game itself
The Capitoline Triad The Capitoline Triad is trivial to get down for free in a sagas deck, a legends deck or even an artifact deck, so maybe Ill adjust my feeling for Papa Leo, as turning all those Thopters into flying Colossus of Sardias sounds awesome
Compare to one of my favorite cards of all time, Grave Titan (4BB Deathtouch Whenever Grave Titan enters the battlefield or attacks, put two 2/2 black Zombie creature tokens onto the battlefield
And its a reasonably popular lifegain commander that uses those artifact combos as finishers
Looking at these cards, its often not obvious what color they are, what their mana cost is, or what their stats are