High-impact draw creatures bring a formidable presence, while efficient instants and sorceries siphon resources at crucial moments
Eevee &
You also need to make sure you hit your land drops, either with draw effects (Qiqirn Merchant and Adventurers Airship provide usable bodies as well as draw smoothing) or cards that directly give you lands or mana (World Map, landcyclers, Blitzball)
Veteran players likely already know exactly which card to pair with an Overloaded Vandalblast: As Commander Spellbook informs us, all you need is a Mycosynth LatticeMycosynth Lattice on the field to blow up every permanent, lands included, that your opponents control
If you activate Fires of Mount Doom's last ability but don't play the exiled card this turn using that casting permission, Fires of Mount Doom won't deal damage to each player
Judging by the consistent updates, the format is here to stay