That seems like it took a ton of work on your part, thank you for sharing this
Pikachu ex is a versatile and quick card that can be obtained from Genetic Apex (A1) packs or crafted with Pack Points
Not only do these cards have a distinct art style, but they depict various creatures from the Lovecraft mythos with a few tweaks to the names
Even with the 50% more effect than Sleight you will find that Adventurous Impulse is less good sooner than the maths would suggest (ie when your deck is a third non-creature, non-land cards)
Unfortunately you cant stack multiple Dinas so it doesnt feel like a card you want to solo-splash for, but theres probably a Jund Sacrifice list that makes sense because Korvold, Fae-Cursed King is still a broken card
Other great targets for Display of Dominance include Whip of Erebos and Kiora, the Crashing Wave