If youre tempted as well, theres plenty more dinosaur-inspired awesomeness across the full card collection alongside other fantastical creations and concepts that only Magic: The Gathering could cook up
Land can only be played during the main phase of your turn if the stack is empty and only once per turn
All of these will have their own purpose, and some can be stronger than others depending on what youre looking for, so dont take the self-mill term too literally
Pithing Needle, for example, wont stop your opponent from casting a creature for its prototype cost
MTG Planechase: What happens when a player loses the game
If you're A) planning to do 100+ ranked drafts of this set no matter what and/or B) a pro-level player that can improve your win rate 8-10% if you don't take the bad Rares, then you may not need to pick bad Rares quite so ruthlessly