You often won't take life totals to zero, but instead take them out through commander damage
This is not a consistent nor proactive card but it is very very powerful indeed
That means that you can find a favourite Battle Deck, perhaps based around a specific character or even Energy type, and use it as the basis for building and customising your own, personal deck
Of these only two (Ajani and Sarkhan) have tipped their toes into different combinations
Subsequently, Rev is better placed within existing theft-focused decks, such as those helmed by Gonti, Canny Acquisitor
All of these point to one key factor the Pokemon TCG has been around for decades, and its not showing any sign of going away any time soon