The fastest single‑minion finish in three turns is one that can hit 30+ attack by turn 3. Think a 4/4 that gets a +2/+2 each turn – it’s 10/10 by the third turn and can finish a 30‑HP hero, or a 5/5 that takes +5/+5 each turn – it’ll be a 20/20 by turn 3 and a one‑hit death. In practice, cards like a 4/4 “Ravenholdt” with a +2/+2 battlecry, or a 5/5 “Gurubashi Baboon” that you buff with “Ragnaros” or “Bloodmage Thalnos,” are the sweet spot. Push that damage, finish by turn 3, and you’re winning.