Pathfinder Savant - Scroll Master w / UMD Question

[Felix Gaunt]

How does Scroll Master work if you use UMD to activate the scroll? It mentions you use your caster level, but it doesn't specify if it's your caster level of the class the spell is being cast for, or just say your highest caster level. i.e. if I'm a Cleric/Pathfinder Savant and use UMD to activate a scroll of magic missile, can I use my Cleric/Pathfinder Savant Caster Level or do use the level 1 that the scroll normally is?

[L. A. Paladin]

If you had multiple caster levels, I assume you would be free to choose whichever of the two you had ... but there's little point in choosing a lower one.

You would cast magic missile at your cleric level. Pathfinder Savant adds (at certain levels) an "increased level of spellcasting", and if you only have one class -- cleric -- then it's added to that.

In other words, if you're a Cleric 6 / Pathfinder Savant 3, your cleric caster level is now 8, because you don't gain a caster level at Pathfinder Savant 1. You'd cast magic missile off the scroll as an 8th level caster, and get 4 missiles at 1d4+1 damage each.