If I play a Sprite Call Hidden to a battlefield that only had temporary units there, can I play that hidden card in my beginning phase after the others die to reveal a new Sprite and get a point for a hold?

Question

Accepted Answer

To answer your question: **Yes, you can do this**, but the timing is the key. You do not wait until *after* the original sprites die; rather, you play your hidden *Sprite Call* **in response** to the *Temporary* triggered ability going on the chain.

According to **RiftJudge FAQ #10474** and **#9228**, here is exactly how this interaction works:

### The Sequence of Events

1.  **Beginning Phase:** Your turn begins. The *Temporary* ability of your existing Sprite(s) triggers and is placed on the chain as a pending item.
2.  **Reaction:** Because an item (the *Temporary* trigger) is now on the chain, the state is **CLOSED**. You may now play your hidden *Sprite Call* as a **[Reaction]**. It is placed on top of the chain.
3.  **Resolution (LIFO - Last-In, First-Out):**
    *   **First:** Your *Sprite Call* resolves. A new 3 [M] Sprite token with *Temporary* enters the battlefield.
    *   **Second:** The original *Temporary* trigger resolves, killing the original Sprite(s).
4.  **Result:** Since your new Sprite entered the battlefield *after* the *Temporary* trigger for the start of this turn had already been processed, it remains on the battlefield, ensuring you maintain presence and score the point for holding the battlefield.

### Key Rules and Nuances

*   **LIFO Resolution:** Per **Rule 336.1**, the newest item on the chain resolves first. By playing your spell in response to the trigger, you ensure the new unit is created before the "kill" effect occurs.
*   **Maintaining Control:** As confirmed by **RiftJudge FAQ #6560**, by reacting this way, you ensure you never lose control of the battlefield, allowing you to score a hold point.
*   **Hidden Restriction:** Per **Rule 811.1.d.3**, when you play a hidden spell that causes you to play a unit, you must play that unit at the same battlefield where the spell was hidden. You cannot choose a different battlefield.
*   **Trigger Timing:** The new Sprite will not be checked for *Temporary* until the start of your **next** turn, as the trigger for the current turn has already been processed.