Theres card draw and pressure, but more importantly, Yshtola works as a powerful value engine once you stack it with auras like Curiosity and Sigil of Sleep
One deck contains mostly Toy characters from Toy Story and the other is built around Supers, especially The Incredibles
Additionally, effects that copy tokens make for elite inclusions in a Sin deck
For example, you could exile tons of permanents with Elspeth Conquers Death, ramp endlessly with Summon: Fenrir, and so on
If another effect (or effects) modifies how much damage a source you control would dealby preventing some of it, for examplethe player being dealt damage or the controller of the permanent being dealt damage chooses the order in which any such effects (including Lightning's) apply
Until then, why not come (re-)familiarize yourself with the world of FINAL FANTASY