If you do, draw four cards.
First, since players already start with 40 life, the life of the Archenemy is increased to 60, and the opposing team shares a 60-life starting total
This effect also exists on Arena, but Cliffs taps for mana, which is the difference between unplayable and incredibly useful
The Orzhov Syndicate are the mafia and church of Ravnica (yeah, you read that right!)
Circle of Life taps into the Sing Together mechanic, so its 8-ink cost can be circumvented, especially with help from a willing teammate
It however is still considered to be in exile and not on the battlefield or your hand, meaning that there are much fewer ways for your opponent to be able to get rid of it before you can cast it