Which character self-sacraficed to end the threat of the Phalanyx uring the X-Men arc Phalanyx Covenant?

Blink (Clarice Ferguson) supposedly killed herself, though this was later proven false, though she did save everyone's lives. Clarice could not properly control her powers, and apparently was unable to teleport anything in an intact form. Instead, any object or person caught in Blink's teleportation field, also known as a "blink wave", would be shredded. She eventually used her abilities to "cut-up" Harvest, a Phalanx entity guarding her and her peers, but apparently was caught in her own teleportation field and died in the process.