Pyromancers Goggles (Starter Collection): Magics got a thing for enchanted eyewear, and Chandras goggles are no different
However, if you do choose a target, and that target is illegal at the time the spell tries to resolve, the spell won't resolve and none of its effects will happen
The inspiration here was Drown in Filth and Rot Farm Skeleton
Now that the Omenpaths have opened Thunder Junction to the Multiverse at large, things ain't as secretive as they used to be
This leads to wonderful situations where you can have most of your board hopping around and allows for absurd combos like generating infinite mana with Peregrine Drake before milling out an opponent with Thought-Knot Seer
That division of damage also won't change, even if damage can't be dealt to one or more of those targets as the ability resolves (usually because they've left the battlefield)