Just add water (or sac-outlets) and the candy eggs become dinosaur shaped!...or giant monster shaped, either is fine! This was originally a dino focused deck but now that I'm making a Gishath deck I decided to cut all the dinos that aren't part of the combos.
The main weakness of this deck is that it leans a lot harder towards the combo side rather than the tribal side (personal preference of mine). That means its fairly reliant on having your commander in play and being able to use its abilities consistently. This can present a problem in groups with proper threat assessment who realize that Atla Palani, Nest Tender is likely a kill on sight commander. That makes the decks fragile but hardly defenseless, there are other combos in the deck without the commander (see below) and sometimes just ramping for a few turns and then playing big dinosaurs can be enough to get you there in the late game. That being said, if this deck was to be played in a removal heavy meta, I'd wait until you have some protection out or the way looks clear to try and get your commander to stick instead of just running it out on turn 3/4.
I'm running the slow fetch lands Grasslands and Mountain Valley for their interaction with Rings of Brighthearth. Rings is a card I want to play for other interactions in the deck so I figured I could tilt the manabase in a way that makes it more useful in the deck as well. Not to mention having some extra shuffle effects with top deck manipulation cards like Sensei's Divining Top and Scroll Rack makes those cards better.
Combos
If you can get at least a +x/+1 buff on your commander (with Ajani's Presence, riot giving a +1/+1 counter from Domri, Chaos Bringer or Rhythm of the Wild, Xenagos, God of Revels buffing her during combat then looping post combat, Sword of Feast and Famine, or Behemoth Sledge) while you have Mirror Entity out, you can activate Mirror Entity for zero mana, infinite times (holding priority) then when you let the first one resolve, Mirror Entity dies and triggers your commander because its an egg. This gets you the next creature from your deck, triggers its ETB effect if it has one, then the next Mirror Entity trigger resolves killing it and getting your next creature. This loop puts each of your creatures into play then into the graveyard, hitting Kozilek, Butcher of Truth shuffles your graveyard back into your deck letting you continue to loop. Verdant Sun's Avatar will get you infinite life and Apex Altisaur will kill all your opponents' non-indestructible creatures but more importantly Burning Sun's Avatar will just kill your opponents (and their creatures but again, not that important if you just win).
Other combos this deck can pull off are Forerunner of the Empire + Polyraptor + Rite of Passage for infinite Polyraptor tokens.
AEther Flash/Marauding Raptor go infinite with Polyraptor but you need to be careful because if you don't have a way to win because of this loop (or a way to end the loop early) you will cause a game draw. This is because none of these abilities are may effects meaning you will keep making tokens which make more tokens with no ability to just stop, causing a never ending loop. You can win with this loop if you have Purphoros, God of the Forge, Goblin Bombardment, or Blasting Station out and can end it early if you have any instant speed sac outlet or removal. For example if you have Ashnod's Altar or Phyrexian Altar you can wait until you have one hundred trillion Polyraptor tokens then sac the one hundred trillion and first token in response to the AEther Flash/Marauding Raptor trigger, ending the loop (and generating infinite mana as well by sacing a trillion tokens to the altars). Although not ideal you can also end the loop with any of your removal that can destroy the final Polyraptor token or the source of the damage itself in response to the AEther Flash/Marauding Raptor trigger. This is still fine if you have Regisaur Alpha out so that you can swing with your new never ending army of raptors. As a last resort, you can Teferi's Protection to end the loop and then try to win on your next turn once the raptors are able to attack. This is all important to keep in mind if you go for the Mirror Entity combo because if you have no way to stop this loop, you could flip into Polyraptor then Marauding Raptor (or already have AEther Flash on the battlefield) and cause a draw which is not how you want to end the game when you go for that combo.
Blasting Station + Rite of Passage + Polyraptor makes the original Polyraptor have infinite +1/+1 counters on it (note: it will still have 5 toughness left until the end of the turn though because of all the damage being tracked on it from the Blasting Station, so make sure your opponent can't block it with something big enough to kill it unless you can give it trample for the win or lifelink or infinite life gain). This also lets you "trade in" any other creature you have for a Polyraptor with infinite +1/+1 counter on it. This is done by sacing the creature you want to trade in to damage a Polyraptor token instead of the original once the original is already infinite. Then you just do the loop again on the new token, making it also have infinite +1/+1 counters (repeat with any number of non-Polyraptors which you want to turn into giant Polyraptors). Doing this loop is best with Regisaur Alpha out or on the player before you's end step if you can get away with all the pieces being on the board and no one noticing or being able to do anything about it, that way you can attack right away and don't have to pass with infinite/infinite Polyraptors just to have one of your opponents wipe the board.
Blasting Station + Purphoros, God of the Forge + Polyraptor should do infinite damage to all opponents.
Blasting Station + Anointed Procession + Polyraptor is the last infinite Polyraptor combo (I think).
Basalt Monolith can produce infinite mana with either Rings of Brighthearth or Mana Reflection. With the infinite mana you can draw your deck with Staff of Domination (or Sensei's Divining Top if you Rings of Brighthearth out too)
Finally there's the obvious Atla Palani, Nest Tender combo, using Ashnod's Altar and Thornbite Staff to cast all your creatures. This would obviously let you win in a few ways but if you can't figure it out, this also gets you into the Mirror Entity combo mentioned above.
