Snowflake of the Deep Sea, Ephemere

:When your other rear-guard is returned to hand during your turn, if you have a grade 3 or greater Mermaid vanguard, choose one of your units, and it gets +5000 until end of turn. :When this unit is returned to hand from , if you have a grade 3 or greater vanguard with "Krysrain" in its card name, [put a card with a different card name from this card from hand into soul], and draw a card.