That used to be solely whites job, but it feels right for green to have it because of its natural disagreement with blue and its technology
This is a potent spell, but its insufficient for white to effectively play a controlling or disrupting route
The Sound Of Drums is an Aura that goads a creature and makes it deal double damage, so even if that creature dies, The Sound Of Drums can be returned to the hand for just three mana
You have very little wiggle room for cards that don't interact with the board directly, so keep things like pure card draw spells and discard spells to a minimum
I dont know about it in casual commander, but this ought to be another of the strongest commanders
Obviously it doesnt save you from everything (oh, the infamously tricky regeneration mechanic), but it does do a lot