Improved Pact Weapon- "You can use any weapon you summon with your Pact of the Blade feature as a spell-casting focus for your warlock spells. In addition, the weapon gains a +1 bonus to its attack and damage rolls, unless it is a magic weapon that already has a bonus to those rolls."
So if your weapon is now a +1 magic weapon and that weapon is now your spell-casting focus, this leads me to interpret it to mean that any spells that use an action to cast (e.g. Eldritch Blast) should also get a +1 to the attack and damage rolls as well.
No, because there are a couple of magic items that give bonuses to spell attacks and 5e is very specific about things like that. If you get a bonus, the bonus is stated, not implied.
"unless it is a magic weapon that already has a bonus to those rolls." implies that having a +2 sword overrides your bonus from improved pact weapon as the same bonus. If that is the case, you know it does not apply to spells because that would mean if you transform a +3 dagger into your pact weapon you would get +3 on spell attacks which is not the intent of the enchant per the description in the DMG. If they stacked their might be an argument that is a different bonus but they don't.
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The lack of inflection in text means that a reader of any post adds their own inflection as they "verbalize" it in their head. I write long and repetitive in an effort to be clear and avoid my intent from being skewed or inverted. I am also bad at examples. It is common for people to skim my posts pull out the idea they think I mean or want to argue against or focus on my bad example instead of the point I am actually trying to make. I apologies for the confusion my failure to be clear and concise creates.
Improved Pact Weapon- "You can use any weapon you summon with your Pact of the Blade feature as a spell-casting focus for your warlock spells. In addition, the weapon gains a +1 bonus to its attack and damage rolls, unless it is a magic weapon that already has a bonus to those rolls."
So if your weapon is now a +1 magic weapon and that weapon is now your spell-casting focus, this leads me to interpret it to mean that any spells that use an action to cast (e.g. Eldritch Blast) should also get a +1 to the attack and damage rolls as well.
Do I have that right?
No, because there are a couple of magic items that give bonuses to spell attacks and 5e is very specific about things like that. If you get a bonus, the bonus is stated, not implied.
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"unless it is a magic weapon that already has a bonus to those rolls." implies that having a +2 sword overrides your bonus from improved pact weapon as the same bonus. If that is the case, you know it does not apply to spells because that would mean if you transform a +3 dagger into your pact weapon you would get +3 on spell attacks which is not the intent of the enchant per the description in the DMG. If they stacked their might be an argument that is a different bonus but they don't.
The lack of inflection in text means that a reader of any post adds their own inflection as they "verbalize" it in their head. I write long and repetitive in an effort to be clear and avoid my intent from being skewed or inverted. I am also bad at examples. It is common for people to skim my posts pull out the idea they think I mean or want to argue against or focus on my bad example instead of the point I am actually trying to make. I apologies for the confusion my failure to be clear and concise creates.
Unlike 4th where with the approriate Feat you could have the weapon enhancement work for the spells, 5th rarely if ever has rhis kind of thing.
"Normality is but an Illusion, Whats normal to the Spider, is only madness for the Fly"
Kain de Frostberg- Dark Knight - (Vengeance Pal3/ Hexblade 9), Port Mourn
Kain de Draakberg-Dark Knight lvl8-Avergreen(DitA)