Late-game two-card combos, and three cards from the Game Changers list are the most interesting restrictions in the entire Bracket system
The multiple-rare possibility means you're not completely locked into a single rare slot, which is a meaningful upgrade from the old Draft Booster guarantee
My only gripe is that Incubators are currently linked to the Phyrexian creature type, and since theyre phased out of existence for the foreseeable future, it makes it much less likely well see the mechanic again
This is standard pracitce, but if you want to see the details of this, see the Jupyter notebook here
If you can turn them into lands, such as with Ashaya, Soul of the Wild, or maneuver their abilities onto land creatures, you can untap either druid and a land infinitely
It's still worth trying out