According to TCGPlayer's Mega Evolution pull rate data, these "Mega Hyper Rare" cards (what a bizarre rarity name by way) on average only appear one in every 1 out of every 1260 packs of Mega Evolution
When designing discard spells, it helps to know which of the two camps the card is aiming for
These three planeswalkers aren't particularly innovative, they just expand upon changes we'd already made: other versions of existing characters, narrower thematic focuses, etc
Without further ado, lets begin the ritual
This shift has created a significant power vacuum, with format-defining staples like Sheoldred, the Apocalypse, Monastery Swiftspear, and efficient one-mana removal spells like Cut Down now gone