Yes, Pokmon Mega Evolution cards are rare, especially Full Art and Secret Rare Mega EX cards, which had smaller print runs and are no longer being produced, increasing their scarcity over time
Where Koma, World-Eater excels is that you get to make four 3/3 tokens whenever you deal combat damage
Strategy As I've just touched on, Heroes are the name of the game for this deck
Video selling is a fairly underexplored way to exchange MTG cards, so try this out if you have a lot of product lying around, and check out Bryans review of the process
omer, King of Rohanomer, King of Rohan, Ash, Party CrasherAsh, Party Crasher, and Kalemne, Disciple of IroasKalemne, Disciple of Iroas all have the ability to get tall, but lack any support for going wide
Brainstealer DragonBrainstealer Dragon seems like a worse Etali, Primal StormEtali, Primal Storm at first, because you have to pay for the stuff you exile