In your case, Lucario- EX is Basic, M Lucario- EX is Mega evolution that "Evolves from Lucario- EX " so you only need Lucario- EX in play to be able to evolve to M Lucario- EX , any other combination won't work [1]
These cards play super-well with Ikoria in Commander, and the only reason I didnt suggest buying Echo of Eons a month ago is that I completely forgot about it
A lot of these early creature types have been errata'd over the years, like alligator being subsumed into 'crocodile', or tiger being subsumed into 'cat', or narwhal becoming a 'whale'
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Fulminator Mage Few cards punish greedy mana bases like Fulminator Mage
While Necrodominance is on the battlefield under your control, abilities that trigger whenever a permanent you own is put into your graveyard from the battlefield (for example, "When this creature dies") won't trigger because cards and tokens are never put into your graveyard