Combos with Bruvac the Grandiloquent

Cast Maddening Cacophony with kicker by paying {4}{U}{U}, causing each opponent to mill their library due to Bruvac.

Cast Traumatize by paying its mana cost, causing an opponent to mill a number of cards equal to half their library, rounded down, times two due to Bruvac.

Cast Cut Your Losses by paying its mana cost, causing an opponent to mill a number of cards equal to half their library, rounded down, times two due to Bruvac.

Declare Terisian Mindbreaker as an attacker, triggering its ability, causing an opponent to mill their library due to Bruvac.

Declare Fleet Swallower as an attacker, triggering its ability, causing an opponent to mill their library due to Bruvac.

Cast Overture by paying its mana cost, causing an opponent to mill a number of cards equal to half their library, rounded down, times two due to Bruvac.

Cast Singularity Rupture by paying its mana cost, destroying all creatures and causing any number of opponents to mill a number of cards equal to half their library, rounded down, times two due to Bruvac. You can also have yourself mill half your library, if desired.

Declare Lord Xander as an attacker, triggering its ability, causing an opponent to mill a number of cards equal to half their library, rounded down, times two due to Bruvac.

Cast Kitsune's Technique by paying its mana cost, causing an opponent to mill their library due to Bruvac.

1. Cast Blood Pet by paying {B}.
2. When Blood Pet enters the battlefield, Altar of the Brood triggers.
3. Holding priority, activate Blood Pet by sacrificing it, adding {B}.
4. Resolve the Altar of the Brood trigger, causing each opponent to mill two cards due to Bruvac.
5. If an opponent mills a nonland card, The Wise Mothman triggers, putting a +1/+1 counter on Evolution Witness.
6. Evolution Witness triggers, returning Blood Pet from your graveyard to your hand.
7. Repeat.