Like the title said, I usually don't play Rogue and I'm just getting into it, but I almost spilled my coffee when I realized that Rogues can basically cast 3 spells per turn: 1 per action, 1 per bonus action, and 1 per reaction.

And oh boy this is SO BUSTED. There are so many combinations, and I'm really excited to try them :)
Command: Flee => Dissonant Whispers.
Fireball => Hypnotic Pattern.
Pyrotechnics: Smoke => Wall of Force.
Scatter => Cone of Cold / Spirit Guardian / any AoE spell.
Plant Growth => Web.
Beacon of Hope => Mass Healing Word.

There are so many! :D

Edit: never mind!

Nah man, Thieves are OP :D

Level 13: Use Magic Device

You’ve learned how to maximize use of magic items, granting you the following benefits.

Attunement. You can attune to up to four magic items at once.

Charges. Whenever you use a magic item property that expends charges, roll 1d6. On a roll of 6, you use the property without expending the charges.

Scrolls. You can use any Spell Scroll, using Intelligence as your spellcasting ability for the spell. If the spell is a cantrip or a level 1 spell, you can cast it reliably. If the scroll contains a higher-level spell, you must first succeed on an Intelligence (Arcana) check (DC 10 plus the spell’s level). On a successful check, you cast the spell from the scroll. On a failed check, the scroll disintegrates.

Also, if I'm playing this, I'm buying a Headband of Intellect, and I take proficiency in Arcana (I'm thinking through the Skilled Origin Feat). With Reliable Talent, I'll never fail that Arcana check :D

Oh you’re absolutely right, I totally missed that.