This ensures your plays are as effective as possible by setting up optimal draws
The Green five-drop uncommon Shrine does it for every Shrine you control so minimum one and then the four-drop red one makes you the monarch and then for free you'll make a 3/1 Knight and then if you are the monarch you can kill each foe for damage equal to your dork count
Your regular combat phase wont untap your creatures, so you need to get through the combat first
Carnage Tyrant will not only likely be a four-of in the 75 of Dinosaur decks, but other midrange decks such as Energy variants will likely have a copy or two in their sideboards as well
This works out quite well, as Elminster's +2 allows you top draw a card and scry two, reliably allowing access to this cost reduction
Flash is great, believe me, but these effects arent permanent thanks to the nature of O-Ring effects, and the best way to balance that out is being able to target anything