Do Sphere Powers with a melee-touch range function like Touch spells in regards to holding the charge? (These are mostly Destruction and Light talents, but others are possible with certain casting drawbacks.)
For example, could I use my standard action and spend SP to cast a Destructive Blast or a Glow effect as a melee touch attack, but wait several turns before making the touch as a separate standard action?
In most cases, if you don’t discharge a touch spell on the round you cast it, you can hold the charge (postpone the discharge of the spell) indefinitely. You can make touch attacks round after round until the spell is discharged.
As a standard action, you may deliver a burst of blunt magical force as a melee touch attack or a ranged touch attack within Close range. A ranged Destructive Blast counts as a Ray attack.
As a standard action, you may cause an object or creature in Medium range to glow for 1 minute per caster level. This requires a touch attack or ranged touch attack.