Any card that interacts with all counters, like proliferate effects, or any counter, like Nesting Grounds, can interact with planeswalker loyalty counters
A pre-constructed deck featuring Mega Evolution EX is here
It seemed so impossible that my brain just refused to acknowledge the flying ability until someone I was playing pointed out that Willing Test Subject had reach and could block the Cogmentor
While not being anything too special outside the Professor Program stamp, these cards are sparse as becoming a professor is not an easy task
Deck 3: Subterror + Numeron Deck 1 Dark Magician 1 Red-Eyes Black Dragon 1 Red-Eyes Wyvern 3 Numeron Wall 1 Subterror Behemoth Umastryx 3 Subterror Guru 1 Subterror Nemesis Archer 3 Subterror Fiendess 3 Ash Blossom & Joyous Spring 3 Maxx C 3 Red-Eyes Insight 1 Red-Eyes Fusion 2 Numeron Calling 3 Numeron Network 3 The Hidden City 1 Terraforming 1 Set Rotation 1 Memories of Hope 2 Subterror Final Battle 3 Solemn Judgment 1 Red-Eyes Dark Dragoon 2 Number C1: Numeron Chaos Gate Sunya 3 Number 1: Numeron Gate Ekam 2 Number 2: Numeron Gate Dve 2 Number 3: Numeron Gate Trini 2 Number 4: Numeron Gate Catvari 3 Number S0: Utopic Future Side Deck: 3 D.D
I think people missed out on the beauty of a lot of the cards from these sets and they are now becoming much more recognised