Seedtime Running Seedtime comes down to your meta
Liliana, Heretical Healer / Liliana, Defiant Necromancer Like most flipwalkers, Liliana, Heretical Healer isnt really the side thats important here
You get a bunch of packs (16 recent packs from the Scarlet & Violet era), a gorgeous playmat, some very cool dice, and an epic deck box
Yeah, it technically gave red something it's not supposed to have, but the spell in a larger sense gave red something it is supposed to have
But in aggregate, high-damage-rate creatures like Jackal Pup and Goblin Guide will tend to speed up the format, which gives high-MV cards more risk in the metagame, which decreases the number of viable high-MV cards in that format, which increases power level
This doesnt make the card a sorcery, but rather notes a timing restriction on when the ability can be activated