If a spell targets a creature and that creature is killed in response before the spell resolves, does the spell still resolve and produce its other effects?

Ruling: The spell will resolve and do as much as it can. If the target becomes illegal while the spell is on the chain, effects that don't depend on the target still happen.

Sequence:

• Player A plays Discipline targeting a creature
• Player B kills the creature in response
• Discipline resolves, cannot give +2 to the now-illegal target, but Player A still draws a card

Nuances:

• Spells cannot be played if their targets cannot be selected when casting
• Targets can become illegal while the spell is waiting to resolve on the chain
• The spell never goes on the chain if it can't choose its targets initially