It is great that you want to sleeve your transforming cards
There are plenty of standout chonky creatures in the slot, such as Quakestrider Ceratops
Anytime you cast one of those four deep sea creature types, you get to look at a number of cards from the top of your deck equal to that spell's mana value
Any "as [this permanent enters" or "[this permanent] enters with" abilities of the chosen permanent will also work
The mana base is great by precon standards and features a number of other $5+ cards, though some of those are repeated in other decks and likely to slip in price over time
Switch Shifting Ceratops with Zetalpa, Primal Dawn because Zetalpa is the stronger game 1 threat I would also Remove Otepec Huntmaster and add some protection or land based ramp if you only use half the amounts of Regisaur Alpha you could include Relentless Raptor if you want more early game It also would'nt Hurt to include some early Sweepers like Crush the Weak or Cinderclasm against aggro decks Some very good dinosaurs to consider: Deathgorge Scavenger;Rampaging Ferocidon;Ripjaw Raptor;Runic Armasaur mrweaselman on Stompy Boys 4 years ago Budget based, 1x more Ghalta, Primal Hunger is pretty good
