While it isnt quite as crazy, Displacer Kitten almost gives me fixed Paradox Engine vibes
Big powerful dinosaurs themselves are often the payoff for a dinosaur deck, so the best way to make the most of these creatures is by giving them additional buffs on top of their already good effects
It's important that if Murderous Rider's controller is capable of returning it to their hand, such as with an Into the Roil, they can easily re-cast Swift End for potentially repeatable removal, 3 Tlincalli Hunter Tlincalli Hunter is an impressive card capable of providing great value for decks aiming to utilize effects that allow spells to be cast from exile, such as those that provide 'impulsive draw'
Legendary Planeswalker - Ajani Nikara, Lair Scavenger Partner with Yannik, Scavenging Sentinel (When this creature enters, target player may put Yannik into their hand from their library, then shuffle.) Menace Whenever another creature you control leaves the battlefield, if it had one or more counters on it, you draw a card and you lose 1 life
