mtg cards like regrowth Emeritus of Abundance Art by Dan Scott MtG Modern Horizons Regrowth Vengeful Regrowth (Extended Art) -

Early plays are so vital to the outcome of cube matches in my experience, particular in midrange lists where things slant more towards fair Magic

Smee, Bumbling Mate and Starkey, Hook's Henchman)

[7] Basic lands are the only exception to the singleton rules for Commander

Plus, if you can get something onto the battlefield, their battlefield is often lacking any real threats until the midgame, letting you go on the offensive uncontested

It is for good reason, as forcing everyone in a match to need to play a subgame in their Magic game is going to add a ton of time to the match

As a new player-focused product, these supplemental sets often have little appeal for enfranchised players