For those who are new to these reviews, the goal is to discuss new cards, evaluate their artwork and mechanical design, and use what we know to assign them to known planes in the Magic Multiverse
MEGA Dream ex guarantees an MA (Mega Attack Rare) instead, which is unique to that set but typically valued lower than SARs
Illustrated by Yigit Koroglu Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Tail-Cloaked Matriach also synergizes well with the set's new Burn mechanic
As for what it does, this six-cost Sorcery has Convoke and allows you to essentially boardwipe all but one of your opponents creatures
The enchantment theme, Rooms, manifest dread, eerie, the return of delirium, impending, glimmers, survival, overlords, and the way it all interacted with the graveyard was a huge success