Harsh Mentor isnt a bad card but feels like it doesnt serve much of a purpose in this deck, the same as Gimli of the Glittering Caves
The full potential of this attack begins before Mega Alakazam- EX is even in play, using Alakazam-EX's Kinesis Ability to get the ball rolling
You'll also want to check out our article on Pop Reports and how to read them
Well, centering, quality and more definitely come into play, but there are a lot of qualities of the card that you cant really see unless heavily studied
Green decks can take this further, and there are some legendary matters synergies that might lure greedy drafters towards a four- or five-color build, but this is nowhere near as viable as in, say, Tarkir: Dragonstorm
Besides, something people tend to forget is that sacrificing ghosts might still have some benefits