First Day of Class

In Commander, First Day of Class is a one-mana ritual for token and enter-the-battlefield strategies — the floor is a haste enabler, the ceiling is a combo piece that collapses a Purphoros, God of the Forge or Goblin Bombardment kill into a single explosive turn. In Pauper it's a legitimate combo enabler at common, slotting into Mogg War Marshal loops and any storm-adjacent shell that wants bodies with haste. Modern and Pioneer have access to more redundant haste effects and cleaner payoffs, so First Day of Class competes for slots rather than owning them — it shows up in specific storm or token builds, not as a staple. Legacy doesn't need it; the format has faster and more flexible options at the same cost.