Cards like Talrand, Sky Summoner add a 2/2 flyer to every instant and sorcery you cast, protecting you from attacks and eventually swarming into a win condition if left unchecked
I dont think youre very likely to literally win the game with his second ability, especially as triple black is a very hefty cost to overcome, but Ring-bearers are very hard to block, so it might happen every now and again
It adds up quickly if you play consistently
A few additions, such as the monthly exams and the dorms, enrich the experience and keep it from being raw dueling
It's even free to cast, and taking three damage when the coin flip comes up tails isn't as scary as it sounds
Maybe the Modern meta gets so aggro heavy that this becomes relevant in something like Naya Zoo, but its pretty tough to find free slots in those hyper efficient decks whose curve generally stops on two mana