Adaptive Training Post

Bracket

• B1 Exhibition — Not in the same deck as its two-card combo partners: Expansion // Explosion, Return the Favor, Reverberate, Increasing Vengeance, Twincast, Reiterate, Flare of Duplication, Insidious Will, Wild Ricochet, Fork, Refuse // Cooperate
• B2 Core — Not in the same deck as its two-card combo partners: Expansion // Explosion, Return the Favor, Reverberate, Increasing Vengeance, Twincast, Reiterate, Flare of Duplication, Insidious Will, Wild Ricochet, Fork, Refuse // Cooperate
• B3 Upgraded — allowed: Its two-card combos are not early, which Bracket 3 allows
• B4 Optimized — allowed: No restriction beyond the banned list
• B5 cEDH — allowed: No restriction beyond the banned list

Why

• Two-card combo with Expansion // Explosion, Return the Favor, Reverberate, Increasing Vengeance, Twincast, Reiterate, Flare of Duplication, Insidious Will, Wild Ricochet, Fork, Refuse // Cooperate (none of them early)

How Lotus Vault estimates a bracket

Bracket: Lotus Vault analysis, with Commander Spellbook flags

Combos

11 known combos, 11 of them two-card.

• Adaptive Training Post + Expansion // Explosion
  Produces: Infinite magecraft triggers
  View on Commander Spellbook
• Adaptive Training Post + Return the Favor
  Produces: Infinite magecraft triggers
  View on Commander Spellbook
• Adaptive Training Post + Reverberate
  Produces: Infinite magecraft triggers
  View on Commander Spellbook

Combos: Commander Spellbook

Rulings

• 2025-04-04 · Wizards of the Coast
  You can’t choose to pay any additional costs for the copy. However, effects based on any additional costs that were paid for the original spell are copied as though those same costs were paid for the copy too.
• 2025-04-04 · Wizards of the Coast
  If the copied spell divides damage or distributes counters among a number of targets, the division and number of targets can’t be changed. If you choose new targets, you must choose the same number of targets.
• 2025-04-04 · Wizards of the Coast
  If the spell has any targets, the copy will have the same targets unless you choose new ones. You may change any number of the targets, including all of them or none of them. The new targets must be legal.
• 2025-04-04 · Wizards of the Coast
  The copy created by Adaptive Training Post’s last ability resolves before the spell it’s copying. It resolves even if the original spell is countered before the copy is created.
• 2025-04-04 · Wizards of the Coast
  If the spell that’s copied has an X whose value was determined as it was cast, the copy will have the same value of X.
• 2025-04-04 · Wizards of the Coast
  If the spell that’s copied is modal (that is, it says “Choose one —” or the like), the copy will have the same mode or modes. You can’t choose different ones.
• 2025-04-04 · Wizards of the Coast
  The copy is created on the stack, so it’s not “cast.” Abilities that trigger when a player casts a spell won’t trigger.
• 2025-04-04 · Wizards of the Coast
  After Adaptive Training Post’s last ability resolves, the next instant or sorcery spell you cast that turn will be copied whether or not it has targets.

Rulings: Scryfall · Wizards of the Coast