The upside of a heavily discounted extra turn doesnt quite make up for the potentially wasted card, but this does good work in decks that manipulate coin flips or can copy it several times over to increase the odds of getting at least one turn out of it
Life Insurance Even more niche, even more crackable, Life Insurance gives you Treasures instead, which is nice in a fair deck, better in aristocrats, and it goes infinite with a variety of combos, like say, Ashnod's Altar with something like Reassembling Skeleton and Falkenrath Noble
Probably the only time Ill play this is when I cant get my hands on a Darksteel Ingot
You will often catch people out with it as well as they do not expect you to disrupt them with a Stifle effect even if they are expecting countermagic
The smaller wrinkle is that more Trainer Cards now have alternate art treatments
Let me know in the comments or on the Draftsim Discord server