Mana Crypt is simply unbelievable on rate, so as long as you are careful, its easy to reap the rewards from the additional mana provided and win the game before the drawback becomes relevant
My local group is 20+ people, each with two or more decks
We have a premium one drop ramp dork, the best combat trick, one of blacks best creature removal spells, whites most powerful one drop beater, some premium top end cards, one drops and even a couple of planeswalkers
The FIN starter deck features characters like Xande, Seymour Beta (likely Seymour Flux), and Artemisa (which is probably Ultimecia in English)
On the flip side, though, Azorius Otters can run into trouble versus decks that put you on the backfoot right out of the gates