Amped Raptor can put multiple creatures on the battlefield on turn two, and chaining a Raptor into a Conduit Goblin to attack for three on turn two feels like a solid start for a potential aggro deck
Combining haste with beefy threats like any of the Ghaltas featured herein or something like Zacama, Zetalpa or Apex Altisaur is a huge play, so its no surprise to see this Dino lord so high up
With self-study not getting us where we want, it's necessary to find a format expert to break down the archetypes and explain the subtle, and sometimes not so subtle differences between the decks and their respective game plans
If not, you may place that card on the bottom of your library
And even if you cast it at the end of your opponents turn, all your stuff phases back in on your Untap step, which is before the Upkeep
Once again, cheating big creatures into play is a winning strategy for any deck