Chac

Chac is a boss in Final Fantasy X-2. It's Yunalesca after transforming into a Basilisk inside Via Infinito.

Chac is a very difficult enemy. She can Petrify characters with her "Stony Glare" attack, which works regardless of any immunities. Chac can also break a character with her "Bash" attack, completely removing them from battle. Because of this, it is good to pack extra Softs and Remedies to cure them before it happens. Chac's ultimate attack, "Heaven's Cataract," does large amounts of damage to multiple characters and can also break them if they are petrified.

Strategy
The simplest way to defeat Chac involves bringing a Gunner in critical condition that is wearing the Cat Nip accessory. Using her "Trigger Happy" ability will result in 9999 damage per hit. After being hit by this a few times, Chac will fall.

Related enemies

 * Gucumatz
 * Kukulcan

Final Fantasy X

 * Anacondaur
 * Basilisk
 * Jormungand

Etymology
Chac is the Mayan god of rain and thunderstorm.