These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Designated Hero: The subtitle is Heroes of Warcraft. That said, two of the "heroes" are Gul'dan (an evil warlock from the franchise's backstory) and Garrosh Hellscream (the Big Bad of Mists of Pandaria).
Game Breaker: Husky Starcraft and his friend Sinvicta discovered that, using "Divine Spirit"snote "Double a minion's Health" and Lorewalker Cho, who has the odd effect of adding a copy of any just-cast spell to your opponent's hand, you can very easily get a Minion up above 1 billion health. Add an "Inner Fire"note "Change a minion's Attack to be equal to its Health and you have a very dangerous Minion. However, the utility of trick is limited, as it requires the two opponents to work together.
Explosive Overclocking: Raising the minion's health too high (specifically, past 2,147,483,647) will cause it to instantly die as its health overflows and becomes a negative number.