ace spec pokemon cards - Deluxe Bomb 134/142 Stellar Crown – shuffle your deck Pokemon Surging Sparks Ace SPEC

Combine this with some effects that steal the top card of an opponents library, Gonti, Canny Acquisitor, and you can do some cool things

Nicol Bolas, Planeswalker : As apropos befitting an evil mastermind like Nicol Bolas, he can ultimate immediately with a Doubling Season in play to annihilate someones board, hand, and life total and stick around for more fun

The other two are more questionable for inclusion in this particular list but would both be top four if permissable and would significantly increase the quality of Gruul card

Since Through the Omenpaths cards are only available digitally, theres no need for crossover that connects the two sets