How many times can Death from Below be played from the trash in 1 turn?

In a single turn, you can play Death from Below from your trash as many times as you have the resources (Energy and Power) to pay for it, provided each cast successfully resolves and its target meets the condition.

The Mechanics

According to the card's text and established RiftJudge FAQs:

1. Triggering: When Death from Below resolves and kills a unit with 3 [S] or less, it generates a "play this from your trash" effect. This functions as a trigger that allows you to play the card again from your trash once the current resolution concludes.
2. Recast: Because Death from Below is a spell, it moves to the trash after it finishes resolving (Rule 351.2, FAQ #10169). Once it is in the trash, it becomes a valid target for the "you may play this from your trash" effect created by the previous resolution.
3. No Per-Turn Limit: There is no restriction on the card itself or in the core rules that limits how many times a single card can be cast or played from the trash in one turn. As long as you have the required resources and the ability to continue validly targeting units that meet the "3 [S] or less" condition, you may repeat the process.

Important Restrictions

• Resolution Requirement: You cannot play the card from the trash while the previous instance is still resolving on the chain (FAQ #10169). The card must move to the trash first.
• Targeting: If the target of Death from Below is removed from the battlefield (killed or otherwise) before the spell resolves, the spell fails to execute its kill instruction, and the "you may play this from your trash" effect will not trigger (FAQ #9402, FAQ #10423).
• Costs: You must be able to pay the [A] (any domain rune/energy) cost each time you play it from the trash.

This is my interpretation based on the card text and RiftJudge FAQs #10169, #9400, and #9402. No official rule explicitly limits the number of times a card can be recurred in a turn, provided all costs and conditions are met.