Welcome to class! This semester, your games will begin with the universal emblem:

"All Instant and Sorcery cards are Arcane Lessons in all zones."

Since this isn't your first year, you'll start with the 9 common Lessons (Gen Eds) in your draft pool: all five mascot spells (Inkling Summoning and friends), and these four colorless spells:

And a Spell Satchel already on the battlefield as part of your school supplies. Don't worry, there are no spells allowed that tamper with your backpack; in fact there are no noncreature spells except instants and sorceries at all!

Get ready for an exciting opportunity to mix and match spells from across magic's history, and find new life breathed into some ancient magic from Kamigawa.

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Important notes

There are a lot of Spirit creatures here, but most importantly every single instant and sorcery cast will be Arcane, so keep in mind how much more powerful cards like those below will be than normal.

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There are also over 30 ways to Learn in this cube, and doing so allows you to pull any Instant or Sorcery card from your sideboard into your hand. While the Adventure spells on Adventurer creatures will be Arcane for the purposes of Splice (and triggers like those above), the creatures are not Lessons in your sideboard and can't be learned!

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Splice onto Arcane is on a few cards here. Here's a reminder of how they work:

702.47a Splice is a static ability that functions while a card is in your hand. “Splice onto [quality] [cost]” means “You may reveal this card from your hand as you cast a [quality] spell. If you do, that spell gains the text of this card’s rules text and you pay [cost] as an additional cost to cast that spell.”
Example: Since the card with splice remains in the player’s hand, it can later be cast normally or spliced onto another spell. It can even be discarded to pay a “discard a card” cost of the spell it’s spliced onto.

702.47b You can’t choose to use a splice ability if you can’t make the required choices (targets, etc.) for that card’s rules text. You can’t splice any one card onto the same spell more than once. If you’re splicing more than one card onto a spell, reveal them all at once and choose the order in which their effects will happen. The effects of the main spell must happen first.

702.47c The spell has the characteristics of the main spell, plus the rules text of each of the spliced cards. This is a text-changing effect. The spell doesn’t gain any other characteristics (name, mana cost, color, supertypes, card types, subtypes, etc.) of the spliced cards. Text gained by the spell that refers to a card by name refers to the spell on the stack, not the card from which the text was copied.