Declare Terisian Mindbreaker as an attacker.
Terisian Mindbreaker triggers, causing the defending player to mill their library.

Infinite mill for target opponent

Bruvac the Grandiloquent

Terisian Mindbreaker

Declare Terisian Mindbreaker as an attacker, attacking the opponent enchanted by Fraying Sanity.
Terisian Mindbreaker triggers, causing the defending player to mill half their library, rounded up.
At the beginning of your end step, Fraying Sanity triggers, causing the opponent to mill the remainder of their library.

Combos with "Terisian Mindbreaker"