Right now, it seems like the Lorcana glimmers term only refers to cards that remain in play after you cast them
Its an effective commander, though, and my personal zombie legend of choice
She creates aggressive, evasive creatures with her plus ability super easily that then fuel her eventual ultimate ability, which at -6 is a very real possibility if you are able to protect Grist with the deathtouch tokens that she makes
For our purposes, we care about literal draws
The assassins cornered her, outnumbered her five to one, and then in a flash she was surrounded by burning shadowsshadows the people recognized
Planeswalkers often benefit from damage prevention because it stops your opponents from attacking them effectively, buying plenty of time to ultimate them and get a shiny emblem