A Model returned to play with Spark of Life returns without Activation Counters or status effects. It keeps any Enhancements and/or Equipment.

You can't return Grey Pilgrim to play with her own Spark of Life, as you are unable to put her in BtB when she is not in play.

If a Model is returned to play and it was a VIM, it is no longer a VIM as usual, and the VIM counts as being killed.

When you return a Model to play, it is Deployed, and follows the usual restrictions for being Deployed (not into BtB with an Enemy model or in an Enemy Model’s ZoC).