While commanders like Neheb, the Eternal have long been mainstays of burn decks in Commander, Toralf looks to be shaping up as a contender for the title
Virtual Card Advantage Virtual card advantage, or VCA for short, is much more of a nebulous term, and not everyone agrees on the exact definition
The ability to pay mana and ping each opponent isn't incredibly powerful, but it is a way to keep things rolling in decks such as Rakdos, Lord of Riots or the more recent Ob Nixilis, Captive Kingpin without having to have spells or other nonland permanents around to help generate life loss
Sigarda, Heron's Grace is the weakest option of the three on pure power level, but its an annoying threat and I like the idea of having a flying, go-wide threat to complement the go-tall game plan in the rest of the deck
Neyali, Suns Vanguard Boros is no stranger to token production