For example, with the new Vivien, Champion of the Wilds, you can cast your werewolves on the end step before your turn, then not cast anything on your own turn, transforming your werewolves (if nobody else casts an instant spell)
With the increased popularity of the Commander format over the years, Wizards of the Coast has been busy slowly pushing more and more card draw spells into White and Red (and even Colorless)
If you need more mana to wipe out behemoths later on, chances are that it is available for you
Smoke Bomb is another banger when it comes to form meeting flavor
Machinists Arsenal Rating: 8/10 Assuming you have plenty of artifacts, Machinist's Arsenal looks obscene
309.5b: If a player ventures into the dungeon while they own a dungeon card in the command zone and their venture marker is on that dungeon cards bottommost room, they remove that dungeon card from the game