So you essentially want a card with insane requirements and even after managing to somehow meet them the pay-off wouldn't be that great?
There was one duel in Yu-GI-Oh! series where there was a card with such insane requirement and tons of people had it. However only one team built a deck around it as they were poor. The Sleeping Giant.
Now Golemagg in Hearthstone, it would need some serious buffing to be even a gimmick victory condition. Like being immune against damage and spells etc. Even that wouldn't make me to put him to my serious deck with a current card pool.
That card was pretty bad even under use of Ragnaros tavern brawl hero which it was designed for.