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
It will buy you a lot of safety with the life and should do enough damage that a lot of your other targets become lethal
For example, the Jurassic World UB cross-over introduced dinosaurs in the form of Secret Lairs, and set booster/collector booster exclusive cards in The Lost Caverns of Ixalan
In Onslaught block, we started making cycling cards that had an effect when cycled
Meditite is classified as a 1-Diamond card in the Fantastical Parade set
Now, its Oracle text, using the rules for phasing: You may choose not to untap Tawnoss Coffin during your untap step