If Soraka, Wanderer is destroyed simultaneously with other units at her battlefield (e.g., by Unchecked Power), can she still save those units?

Ruling: Yes. When multiple units die simultaneously, Soraka can save other units at her location that meet her conditions (friendly, at her location, less Might than her). Because the deaths are simultaneous, Soraka is still considered to be "here" at the battlefield when her replacement effect is applied to the other units' deaths.

Sequence:

• Simultaneous death events are queued for Soraka and the other units
• As the controller of Soraka's replacement effect, you choose the order to apply it
• Apply Soraka's replacement effect to the other units first—she saves them (healing, exhausting, and recalling them)
• After her replacement effect sequence is complete, Soraka's own death resolves (unless she has a way to save herself, like Guardian Angel)

Nuances:

• If Soraka has Guardian Angel, you can choose whether to apply Soraka's effect first (saving units at her battlefield) or Guardian Angel first (saving Soraka and recalling her to base, where she could then save units dying simultaneously at base)
• Each replacement effect can only be applied in one sequence to simultaneous events—once Soraka's effect is used on battlefield units, it cannot then apply to base units from the same simultaneous event