Dnd Dmg Spell Scroll Rules

Digging through the DMG, the only info on spell scrolls is on pages 139 and 140 (and 140 is just the 'oops' chart.). basically, a scroll can let you cast the spell ONCE, then it is blank. OR you could scribe the spell into your book (if you use a book) and have it available to memorize regularly.
My question is, if player A casts the bless spell fro ma scroll, is she using her concentration slot to maintain it? There is nto a clear cut rule, and going from item descriptions i get two precedents:
1) The heroism potion gives bonus hit points AND acts as the bless spell - it specifically states it does NOT use concentration to maintain the bless effect.
2) Back to the scroll description - the spell on the scroll is for all intents and purposes the spell ready to cast - no material components are needed - those were used making the scroll, So reading the spell off the scroll is CASTING the spell, so it works mechanically like casting a spell from memory - you need to concentrate to maintain the effect.
As DM, i lean towards example 1, since those effects are specifically labeled as not needing concentration. But i worry that could lead to unforeseen consequences ™.
Any ideas, recommendations or experiences with this?
  1. Dnd Dmg Spell Scroll Rules
  2. Dnd Dmg Spell Scroll Rules Printable
D&d using spell scrolls

Dnd Dmg Spell Scroll Rules

Dnd dmg spell scroll rules printable
  • Assume the scroll spell’s caster level is always the minimum level required to cast the spell for the character who scribed the scroll (usually twice the spell’s level, minus 1), unless the caster specifically desires otherwise. The writing for an activated spell disappears from the scroll.
  • A spell scroll bears the words of a single spell, written in a mystical cipher. If the spell is on your class's spell list, you can use an action to read the scroll and cast its spell without having to provide any of the spell's components. Otherwise, the scroll is unintelligible.

Dnd Dmg Spell Scroll Rules Printable

(Oh, and Jester: the 'half cost' suggestion is in the DMG; see page 135). Now, note that spell scrolls do change in rarity. Cantrips and level 1 scrolls are 'Common', Level 9 scrolls are 'Legendary'. If you use the DMG guidelines, that gives you a range of 25 gold pieces to 25,000+ gold pieces for each individual scroll.