Do all spells that affect units count as 'targeting' that unit, or is it just spells that say 'choose'? Also, when do spells target - on cast or resolution?

Ruling: Spells count as targeting if you select something (indicated by words like "choose", "a", "an"). Spells do not target if your opponent is choosing. Spells target on cast, not resolution.

Nuances:

• Icathian Rain would trigger Deflect 6 times (once for each instance)
• There are some exceptions to the general targeting rules