mtg energy commander precon Modern Horizons 3's Creative Deck Guide Living Energy Precon Transformation |

It turns out that making all creatures into vanilla 1/1s is quite strong

Diminishing Returns is the first attempt at creating a "fixed" version of Timetwister

Some mechanics like dredge are built around self-mill and filling the graveyard, with others like delve utilizing milled cards

If it's not your turn and you gain control of a creature with a boast ability after that creature attacked, you can activate that creature's boast ability if it hasn't been activated yet that turn

Doesn't take much imagination to see this getting out of hand quickly, as a single burn spell just eliminated each opponent's life total by more than half