Such triggered abilities start with "when" or "whenever." Some keyword abilities also include a triggered ability that happens when a permanent enters the battlefield.
In any dedicated dino-deck, it's gonna be among the best card draw options you can run, and likely an auto-include
For all intents and purposes, its a four mana Sun Titan
If one of the target creatures you control is an illegal target when Coordinated Clobbering begins to resolve (perhaps because it's no longer on the battlefield or because it's tapped), that creature won't deal any damage
The Lorcana version of mill is slightly different, as youll be using A Whole New World (AWNW) to force your opponent to discard their hand and then draw seven fresh cards, but the win condition remains the same
Griselbrand is already pretty much the complete package when it comes to a fat dork