History of Blizzard Wizard

Blizzard Wizard is a medal triumph: rapidly defeat multiple targets with a single Winter's Wrath Super (the Stasis Super of the Shadebinder Warlock). The objective counts medals earned.

How to complete

Winter's Wrath casts a barrage of Stasis shards that freeze targets and a shockwave that shatters all frozen targets, so activate it near clustered enemies.

Unconfirmed: the medal's exact kill count and time window, and which activities award it, were not found in any page I opened (the medal lists on D2 Wiki, Destinypedia and Samurai Gamers do not include it).