Adaptive Training Post + Expansion // Explosion
Produces: Infinite magecraft triggers
- Color identity
- UR
- Mana
- {U/R}{U/R} plus enough mana to cast the additional instant or sorcery
Prerequisites
You have an instant or sorcery card in hand with mana value 4 or less.
Steps
- Cast the additional instant or sorcery by paying its mana cost.
- If Adaptive Training Post had two charge counters on it, it triggers, putting a charge counter on it.
- Holding priority, activate Adaptive Training Post by removing three charge counters from it, copying the next instant or sorcery spell you cast this turn.
- Cast Expansion by paying its mana cost, targeting the spell cast in step 1.
- Adaptive Training Post triggers, copying Expansion, with the copy targeting the original Expansion.
- Resolve the copy of Expansion, copying the original Expansion, with the copy targeting the original Expansion.
- Repeat step 5.
How to execute this combo
The "Adaptive Training Post + Expansion // Explosion" combo takes 7 steps in order. Make sure you have the mana open and permanents listed in the prerequisites before you start — opponents can respond between steps.
The end result: Infinite magecraft triggers.
Practice the line offline: lay out the cards, walk through each step, and note where you can lose the combo (summoning sickness, lack of priority, removal on a key permanent). In game, announce each step clearly; in casual play you can offer to shortcut after demonstrating the loop.
The best window is a turn when opponents are tapped out or after they commit a spell — hold protection (a counter, Vexing Shusher) if the combo wins on the spot.